Firefox OS Documentation

About the Call log

The call log is the history of all outgoing, incoming and missed calls.

How do I get to the Call log?

1. Go to your home or all applications screen and tap the green phone icon located at the bottom left of the device.

Ph App Mail FixedWaka_Flocka

2. After you are on the call application screen, tap the call log icon.


Inside the Call log

You can see the history of your outgoing, incoming and missed calls all located inside the call log.

What do the symbols by the calls represent?

  • outgoing call represents an outgoing call
  • incoming call represents an incoming call
  • missed_call represents a missed Incoming call

What happens when I tap on the number?

You will be presented with the following options:

contact options

How do I clear the Call log?

If you want to clear your call log just tap on the menu icon small (menu icon) in the top right of your screen and you'll be able to:

  • Select all and delete


  • Manually select from the list and delete, for example:

delete call logger

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REDIRECT Make calls and access voicemail on Firefox OS

Importing Facebook & SIM contacts

REDIRECT Add, manage and share contacts on Firefox OS


REDIRECT How to use the Messages app

Personalizing your settings

REDIRECT Silence incoming phone calls

Toggling Clock Alarms

  1. From the home screen, tap clock to view the clock.
    New Clock

  2. Tap a set alarm to change it or to turn it off.
Tip: Tap the clock for the digital view.

Adding a new Clock Alarm

  1. To set a new alarm, tap add alarm from inside the clock app.

    New Alarm Menu

  2. Set the time: Slide the numbers up or down to select the time you would like the alarm.
  3. Add a label: This is what the alarm will be called.
  4. Pick an alarm sound: Tapping on a sound will select and play it, and you can confirm your selection by tapping Clock "OK" Button . Currently, there are 8 alarm clock sounds:
    • "Classic Buzz"
    • "Classic Pulse"
    • "Classic Progressive"
    • "Gem Echoes"
    • "Into the Void"
    • "Ringing Strings"
    • "Shimmering Waves"
    • "Smooth Strings"
  5. Snooze: This is a short delay before the alarm rings again, and can be either 5, 10, 15 or 20 minutes.
  6. Tap Firefox OS "Done" Button to save the alarm.

Removing a Clock Alarm

  1. From the home screen, tap clock to view the clock.
  2. Tap on the alarm you want to delete to go to the edit menu.
  3. Scroll to the bottom and tap the Firefox OS Clock "Delete" Button button.

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Connecting to WiFi

REDIRECT Get connected - access Wi-fi and cellular networks


REDIRECT Search the web, bookmarks and browsing history

Firefox OS's Adaptive app search feature completely erases the lines between what is local to your device and what is on the web. When you want to find apps or documents, you can just type starting with a single word and the results will start to appear!

To create a consistent search experience for users, Firefox OS also provides a search framework for developers. This helps them implement search for their applications.

Here's How:

  1. Tap the home button.
  2. Swipe to the right to open the search screen.

    search firefox os
  3. Search for what you need.
  4. Tap what you see that is interesting to you.

    search firefox os2
To install an application to your phone, tap and hold the application icon and select Add to Homescreen.

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Maps & Navigation

REDIRECT Accessing maps and local information on Firefox OS

Pictures, Video & Music

How To Take Pictures

  1. To open the camera app, tap camera app .
  2. Position your camera to what needs to be taken and then tap camera at the bottom of the screen.
    You might see a screen asking if you want to allow geolocation, select Allow to add this information to your photo. Go to Settings > App Permissions > Camera to adjust the Geolocation setting for your camera app.
  3. Your photo should now be captured and will be available for half a second for review. If you don't want this photo, tap delete to delete it.
Firefox OS lets you control your flash and focus settings if your device has these features.

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REDIRECT How to use the Gallery app

REDIRECT Listen to the radio on Firefox OS

The Firefox OS Music app can play most popular audio files. This article explains how to transfer music from your computer and, for Firefox OS v 1.1, how to download it from the browser or receive it over Bluetooth.

Add music from your computer

  1. Enable USB mass storage:
    • Find out what version of Firefox OS you have.
    • For Firefox OS v 1.0.1: Open the Settings app, scroll down to the Device section and tap Media storage. Then, in the Media storage settings, enable USB mass storage.
    • For Firefox OS v 1.1: Open the Settings app, scroll down to the Storage section and enable USB mass storage.
      USB 1.1
  2. Make sure your phone is on and then connect it to your computer using a USB cable. In a moment the SD card on your phone should be accessible from your computer.
  3. On your computer, click the Start menu and choose My Computer. You should see your phone's SD card listed as a "Removable Disk" (labeled "E:" for example).On your computer, click the Start menu and choose Computer. You should see your phone's SD card listed as a "Removable Disk" (labeled "E:" for example).On your computer, choose the Desktop tile on the start screen. Then open the File Explorer (Folder icon in the task bar) and choose Computer in the left sidebar.On your computer, click the Finder in the dock. A new Finder window will open and you should see your phone's SD card listed in the left sidebar under "Devices" (labeled "NO NAME" for example).On your computer, click the Home folder button in the top left corner of your screen to open a file window. You should see your phone's SD card listed in the left sidebar.
  4. Double-click on the SD card in the My Computer window. You will see a list of the files and folders on the card.
    Drag music Win7
    Double-click on the SD card in the Computer window. You will see a list of the files and folders on the card.
    Drag music Win7
    Select your SD card in the left sidebar. You will see a list of the files and folders on the card.
    Drag music Mac
    Select your SD card in the left sidebar. You will see a list of the files and folders on the card.
  5. Drag and drop your music files (or folders with music files in them) on to the window to copy them to the SD card.
    Tip: Firefox OS will play most iTunes files. Just drag music from the iTunes window to your SD card to copy them.
  6. When you are finished, eject the SD card from your computer and disconnect your phone. You can now access your music in the Firefox OS music app.

Download music from the browser

Load a music file in the browser, long-tap on it and then choose Save audio.

Note: This feature is available in Firefox OS version 1.1 and higher. Not sure what version of Firefox OS you have? Here's how to find out.

Receive music over Bluetooth

Your Firefox OS device can receive files over Bluetooth - just make sure Bluetooth is turned on and your device is visible to others.

Note: This feature is available in Firefox OS version 1.1 and higher. Not sure what version of Firefox OS you have? Here's how to find out.

Supported Audio Formats

The music app supports these audio files (details):

  • .mp3
  • .mp4, m4a (encoded with H.264 or AAC)
  • .wav
  • .ogg (encoded with Vorbis or Opus)
  • .webm (endoded with Vorbis)
  • .3gp

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REDIRECT Play music on Firefox OS

REDIRECT How to take screenshots on Firefox OS


To open the calendar app, tap on the Calendar icon, you probably need to swipe one or more screens to the right:

Open Calendar

With the Calendar open you have a choice of importing an existing calendar or add a new entry.

Importing A Calendar

To import a calendar, tap the menu icon (top left).

Add Offline Calendar

Tap the plus sign on the next panel.

add calendar

A sliding panel will appear which will allow you to choose your calendar provider. Tap the type of calendar that you want to add, then follow the prompts to log in.

Calendar Provider

Known issue - Yahoo! Calendar: Yahoo! Calendar is not currently supported in Firefox OS versions 1.0 to 1.4. While configuration appears to work, you will not be able to import or add events from Yahoo! Calendar. We expect to see this resolved in version 1.5. For more information see bug 974554.

To find out what version of Firefox OS you have, see How do I find what version of Firefox OS I have?

Once you've successfully followed the steps, you will see a list of available calendars. Tap the ones you choose to sync with Firefox OS.

Choose Calendar

Once you have chosen the calendars you wish to import, go ahead and click on the settings icon on the lower left hand corner:

Calendar Settings Icon

This will bring up your account settings screen allowing you to, for example, choose the time increment at which your calendar(s) should be syncronized.

Calendar Import Settings

Once you have finalized your settings and clicked Done, your calendar entries will be added and visible.

Calendar Entries

Manual Calendar Entries

To add a new calendar entry directly on the device, click the + icon, located top right.

Calendar Add Entry

On the event screen, go ahead and add all of the relevant information of your new event. There is also room to add any additional comments you might want to associate with the event.

Event Details

Once you have completed all of the information for your event, go ahead and tap on the Save button, top right. This will then save your new entry and redirect you to the Calendar view.

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REDIRECT Add an email account to the Mail app in Firefox OS

REDIRECT Send and manage email

REDIRECT Compose an email from the Contacts app

  1. To open the email app, tap email .
  2. Tap menu icon and then tap contacts icon .
  3. You will see a list of your email accounts.
  4. Tap on the email account you wish to switch to.
  5. A list of folders for your selected account will be displayed. Tap on a folder to read the email in that folder.

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REDIRECT Address an Email using To, CC and BCC fields in Firefox OS

Deleting a single email

  1. To open the email app, tap email .
  2. Tap on an email to display it.
  3. Tap delete at the bottom to delete the email.
  4. The email will be deleted and moved to the trash and the remaining emails in that folder will be displayed.

Deleting multiple emails

  1. To open the email app, tap email .
  2. Tap on editicon .
  3. Tap on blueoff next to the emails you wish to delete.
    • Checkmarks will be displayed next to the emails you have selected to be deleted ( blue circle checked ).
    • To uncheck an email for deletion tap on blue on and a blueoff (blue empty circle) should show.
  4. Tap delete at the bottom to delete the selected emails.
  5. The emails will be deleted and moved to the trash and the remaining emails in that folder will be displayed.

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REDIRECT Forwarding email on Firefox OS

  1. To open the email app, tap email .
  2. Open the email you want to reply to by tapping on it.
  3. At the bottom of the screen, tap reply to reply only to the sender or tap reply all to reply to all.
  4. Fill in the Subject, add or modify recipients in the To and cc/bcc fields, enter the text of your reply and then tap on Send. See Send and manage email for full details.

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Downloading and installing apps

REDIRECT How to download and install apps

How do I download and install apps on Firefox OS?

Firefox OS provides two ways to get apps:

Firefox Marketplace - Mozilla's marketplace for great apps like Twitter and awesome local content from the best web developers in your region.

  1. Swipe left from the main screen to find the Firefox Marketplace and tap the icon marketplaceicon . A list of available apps will be opened.

    Marketplace Home

    You can search for apps by keyword or category by tapping the All Categories menu, or by swiping the screen.
  2. Tap the icon of an app you want to install. The app page will be displayed, where you can find the application description and user reviews.
  3. Tap the Free or Paid button to continue installation.
  4. Confirm installation by tapping the Install button.
  5. Tap the Launch button to open the app.

Adaptive app discovery - Firefox OS includes a adaptive app discovery engine. Just type a single word like sushi to discover related mobile apps in your region, organized by their superior mobile experience and tuned to bring you what you want without typing any further.

  1. Swipe right from the home screen to find the adaptive app search screen.
  2. Tap a category or type a keyword into the search box at the top. Apps with superior mobile content appear on the screen.


  3. Just tap any app to try it, without downloading or installing it.
  4. Tap and hold an app icon to install the app to your home screen.
Tip: Apps will also include the search results, so you don't have to type your search again.

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The Marketplace is a store that features apps designed for your Firefox OS device. This article looks at how to discover and install them.

Find great apps

When you open the Marketplace you'll see a list of featured apps and popular apps.

  • Tap the All Categories dropdown to filter the popular apps list. For example, if you select "Games" you'll see the most popular game apps.
    All Categories
  • Of course, every Marketplace screen includes a search box to help you find exactly what you're looking for.
    Marketplace search
  • While browsing, tap on any app to look up details about it. You'll be able to see screenshots, a longer description and reviews.
    App details

Install an app

Installing an app is quick and easy.

  1. When you find an app that you would like to install, tap the blue button. If the app is free, the button will say that. If the app costs money, the price will be listed on the button.
    Free and paid apps
    Note: The process for purchasing an app differs between carrier and country. Just follow the simple on screen instructions.
  2. Confirm that you want to install the app by tapping the Install button.
    • Your app will be downloaded and an icon will be placed on the home screen.
      Twitter installed

What's the difference between Marketplace and Adaptive Search?

The Marketplace and Adaptive Search offer two different experiences for downloading apps. The Marketplace is a store with apps designed for your Firefox OS device. The Adaptive Search finds mobile websites that can be installed and used like apps.

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Accessing the Marketplace from an Android Device

In order to run the Firefox Marketplace you need to have the latest version of Firefox for Android.

Launch Firefox and navigate to the Firefox Marketplace site (

Alternatively, you can follow these steps after launching Firefox to access the Firefox Marketplace:

  1. Press the Menu button of your phone.
  2. Select "Apps."
  3. Tap the top right icon.

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REDIRECT How to use Facebook, Google, Twitter and YouTube on Firefox OS

REDIRECT How To Uninstall An Application

REDIRECT What is the Marketplace?

The Firefox Marketplace offers you two ways to find apps, you can browse for new apps or you can search for them.


If you want to search for the name of the App that you are looking for you can:

  • From the home screen, tap on the magnifying glass search-glass and write your search keywords.
  • In any other page, type your search keywords at the top of the screen.

The search function allows you to explore apps using their name or specific keywords. For example, if you search for "game" you can find the list of all the available games.


If you decide to browse the Firefox Marketplace to see what's available, you can do so by selecting one of the 6 categories at the bottom of the Home page. Each of them will show you a list of apps that you can download.

You can reduce the selection of apps by taping on the "Filter" button and selecting the topics that you are more interested in.

It possible to customize the view to show screenshots of the apps or show more apps without scrolling. To do so, press the view-toggle button.

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  1. Open the Firefox Marketplace.
  2. Tap in the app that you want to report. You can find specific instructions to find any app in the following article: How to navigate and find Apps in the Firefox Marketplace.
  3. Scroll down to the bottom of the page.
  4. Press Report Abuse.
  5. Write your comments in the text box and press Send Report.

After being reported, one of the reviewers will check the app and take the required actions.

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REDIRECT How to switch between or quit apps

Privacy and security settings

REDIRECT Privacy and Security settings for Firefox OS

Most major websites track their visitors' behavior and then sell or provide that information to other companies (like advertisers). Firefox has a Do Not Track feature that lets you tell websites you don't want your browsing behavior tracked. This article explains what tracking is, how the Do Not Track feature works and how to turn it on.

What is tracking?

Tracking is a term that includes many different methods that websites, advertisers and others use to learn about your web browsing behavior. This includes information about what sites you visit, things you like, dislike and purchase. They often use this information to show ads, products or services specifically targeted to you.

See who’s tracking you online: Download the Lightbeam add-on for Firefox

How does the Do Not Track feature work?

When you turn on the Do Not Track feature, Firefox tells every website you visit (as well as their advertisers and other content providers) that you don't want your browsing behavior tracked. Honoring this setting is voluntary — individual websites are not required to respect it. Websites that do honor this setting should automatically stop tracking your behavior without any further action from you.

Turning on Do Not Track will not affect your ability to log in to websites nor cause Firefox to forget your private information — such as the contents of shopping carts, location information or login information.

Note: You may see less relevant advertising on websites if you have the Do Not Track option activated.

How do I turn the Do-not-track feature on?

The Do-not-track feature is turned off by default. To turn it on:

  1. Scroll and find the Settings application.


  2. Find and tap the Do Not Track item, under the Privacy & Security category.


    track category
  3. Tap the circle on the right of the do not track option.


    track select

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REDIRECT Set Screen Lock on Firefox OS

The screen lock feature allows you to make your phone more secure.

Setting the lock

  1. Tap settings icon to open the Settings app.

  2. Scroll down to Privacy & Security, and tap Phone lockScreen lock

    Phone lock d

    screen lock
  3. On the resulting screen you will have 2 options:
    screen lock only
    lock screen
  • Lock Screen - Provides no protection, allowing you to quickly access the homescreen.
  • Passcode lock - Allows you to set a four-digit passcode, which protects your phone from intrusions.

Tap the button next to the option you want, or both to turn them on.

Note: You will be prompted to set a passcode if you choose to have a passcode lock.

Changing your Passcode

You can change your passcode as often as you want.

  1. To change your current passcode tap the Change Passcode button at the bottom of the lock settings panel.
    security lock
    change pw
  2. Enter your current passcode to authenticate that you are the owner of the device.
    Auth Dialog
  3. Type in your new desired passcode.
  4. Tap the Change button when you are finished.
    New Passcode Dialog

Passcode Prompt

As you turn your phone screen on you will be prompted to enter a passcode to unlock the device.

  1. To unlock you device, turn the phone screen on. You should see a screen that looks like this:
    • If the passcode you enter is correct, you will be allowed to access your device further.
    • If the code entered incorrect, you will not be allowed access into the device and will be returned a highlighted red box error.

Related Setting's

You can also add a SIM PIN to prevent access to your SIM card.
When enabled, any device containing the SIM card will request the SIM PIN upon restart.

  1. To set a SIM PIN, tap on settings icon to go to the Settings app.
  2. Swipe up to until your see the Privacy and Security section.
  3. Tap on SIM security.
Important:The SIM PIN is not the same as the passcode used to unlock your phone!

For more information regarding the SIM PIN, please read Setting the SIM PIN on Firefox OS.

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You can add a SIM PIN to prevent access to your SIM card. When enabled, any device containing the SIM card will request you to enter the PIN on startup.

Setting the SIM PIN

In order to be able to set the SIM PIN it would have to be done in the settings section of the phone.

  1. Tap on settings icon to open the Settings.
  2. Scroll down to Privacy & Security, and tap on SIM security.
    SIM Security List Item. sim lock
  3. To turn on the SIM PIN, tap the switch to toggle it on.
    SIM PIN Switch
    The blue color bt icon means that the PIN is activated.
  4. You will then be asked to create a 4-6 digit SIM PIN.
Write down your PIN and hide it in a safe place. Without this PIN, you will no longer be able to place calls or send messages using your SIM card.

Changing the PIN

To change the SIM PIN, you would have to go the same place in your settings but do the following instead:

  1. Tap the Change PIN button.
    Change PIN button
  2. Enter a new SIM PIN.
The SIM PIN is not the same as the passcode used to unlock your device. See Set Screen Lock on Firefox OS for more information.

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It's helpful for Mozilla's engineers to be able to measure how Firefox for Android behaves in the real world. The Telemetry feature provides this capability by sending performance and usage info to us. As you use Firefox, Telemetry measures and collects non-personal information, such as memory consumption, responsiveness timing and feature usage. It then sends this information to Mozilla on a daily basis and we use it to make Firefox better for you.

For more about what kind of information is collected and how it's used, see our privacy policy.

How do I opt-in or opt-out of sending performance data?

You can turn this feature on or off at any time in your Settings:

  1. Tap the Menu button (either at the bottom edge of the screen or in the the top-right corner) and then Settings (you may need to tap More first) .
  2. Next tap Mozilla and then check or uncheck the box next to Telemetry in the Data Choices section.
  1. Tap the Menu button (either at the bottom edge of the screen or in the the top-right corner) and then Settings (you may need to tap More first) .
  2. Next tap Data choices and then check or uncheck the box next to Telemetry.

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Basic settings

REDIRECT Get connected - access Wi-fi and cellular networks

REDIRECT View data usage on Firefox OS

To check the battery level:

  1. Tap on settings icon to open the Settings app.
  2. Scroll down to the Device section and tap on Battery.



    • The current battery level appears in the form of a percentage.

Under the current level percentage, you will also see Power save mode. Please visit this article to learn more about saving battery power.

Tip: The battery level also appears in the notification bar.

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REDIRECT Enable Bluetooth on Firefox OS to send and receive files

  1. Notifications appear at the top of your home screen and on the lock screen.

    home screen notifications

  2. To open the Notifications tray, pull down from the top of your home screen.

    open notification tray

  3. To view a notification, tap it.
  4. Tap Clear All to remove all notifications from the screen.
Tip: Open the Settings app Settings icon , then tap Notifications to enable, disable, or customize notifications.

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What is Airplane Mode ?

Airplane Mode is a function available on Firefox OS that allows you to temporarily disable all wireless connections on your device. This is commonly used on airplanes, which often require all cellular connections turned off during flight. It can also be used to save battery on your device, or if you simply want to disable wireless connections with the push of a button.

What can I do while in Airplane Mode?

You may continue to use Firefox OS while in Airplane Mode. You can also turn on Wi-fi and Bluetooth while in Airplane Mode as well. Using the wireless connectivity functions during airplane mode will display an error.

How do I enable Airplane Mode?

To enable airplane mode, first slide down the notifications bar by tapping and holding at the top of the screen and sliding down.

Settings Slide

Once the notifications bar has fully extended down, you can tap on the airplane mode icon to enable it.

Airplane Mode

Once enabled, you will notice a small, white airplane icon in the status bar at the top of your screen.

Airplane Mode Active

When you are ready to disable Airplane Mode, slide down the notifications bar and tap Airplane mode to be off. Your device will then begin to reconnect to wireless networks and should be ready to use in a few moments.

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REDIRECT Notifications video tutorial

Telemetry is an optional feature of Firefox OS that measures non-personal information such as memory consumption, app performance, and feature usage. It sends this data to Mozilla on a daily basis, and helps us to identify bugs and improve performance.

For more information about what kind of data is collected and how it's used, see our privacy policy.

How do I turn Telemetry On or Off?

  1. Tap settings icon to open the Settings application.
  2. Tap the Improve B2G OS button and the settings window will appear.

    Telemetry Firefox OS

  3. Tap the Submit performance data button to turn Telemetry on or off.
    activate icon represents that Telemetry is enabled.

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Word suggestions is a feature of Firefox OS which can predict and suggest words as you are typing. We will show you how to enable the "Word suggestion" feature.

How to enable Word Suggestions

  1. Launch the "Settings" application on your phone by tapping settings icon .
  2. Scroll down the menu to the "Personalization" section, find Keyboard Settings in Firefox OS and tap it.
  3. Check the "Word Suggestion" option:

Firefox OS Word Suggestion option

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Advanced settings

Changing The Default Language

Make sure you are on your homescreen.

  1. Tap on the Settings app to open the Settings App.
  2. Scroll to the Personalization section.
  3. Tap on Language.

    • Language options will appear.
  4. Tap on the Language drop-down menu to display the list of available languages.

    • The Language checkmarked is the current Language selected.
  5. Select the Language from the drop-down list you want to use.
  6. Tap OK.
  7. The new language setting is saved.
Note: To localize Firefox OS help in your language, see Translate Help Articles!

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REDIRECT Keyboard settings and tips for Firefox OS

REDIRECT Change the wallpaper on Firefox OS

How Do I Control Cellular and Data Connections and Settings?

Enable or disable your data connection by using the settings application or the notification tray.

  1. Tap Settings App (small) and choose Cellular & Data.
    Carrier, data, roaming, and advanced settings information will appear.
  2. Enable or disable your data connection and data roaming settings by tapping the button. data_connection

  3. Use Advanced Settings to set up or change your network provider.
The data network appears under Data Connection when enabled.
Tip: Use the Cost Control application to check your data usage and to set notifications when you reach low levels.

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How Do I Control Brightness Manually or Automatically?

Adjust screen brightness by using the Display function in the settings application.

  1. Tap the Settings app and choose Display.
    Wallpaper, screen timeout and brightness settings appear.
  2. Tap the Adjust automatically radio button to use the brightness slider.
    The screen brightness changes to match the new setting.
Tip: Enable Adjust automatically to have Firefox OS set brightness for power savings.

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REDIRECT Change ringer, sound and vibration settings

REDIRECT Rename Your Firefox OS Device For Bluetooth Use

Fix Problems

REDIRECT How to fix common problems

This article gives answers to frequently asked questions about Firefox OS.


How can I get Whatsapp on my Firefox OS device?

Whatsapp is not currently available for Firefox OS, we apologize for this inconvenience. TuMe or Tuenti are alternative apps, or search for Loqui in the Firefox Marketplace. Also, we support Facebook chat by using the Facebook app that is pre-installed on Firefox OS.

Music & Sounds

How do I create a custom ringtone?

v1.01 does not support custom ringtones, we apologize for this missing feature and we are working on developing this in a future release for Firefox OS.

How do I download music from the browser?

v1.01 does not include this feature, but this is fixed in v1.1 which will be made available to our hardware and service partners as soon as it has completed final testing.


How can I prevent my device from hanging or getting stuck?

If you notice that app are lagging or becoming slow, simply press the power button on the phone and restart the device.

How can I recover from a hang on my phone?

You can recover in several ways, as follows:

  1. Press and hold the home button, then wait a minute for the device to become active.
  2. Press and hold the power button on the device and select Restart from the menu.
  3. Remove the back cover and remove and then re-install the battery to reboot the phone.


What email providers are supported?

Hotmail, Yahoo mail, GMX mail and Gmail are currently supported with more on the way in future releases. Please try to connect your email account even if it is not listed here and then leave us feedback.

Are there any other limitations?

Currently Firefox OS doesn't support copy/paste, sending HTML email, viewing all email accounts at once and attachments. These features are being considered for future releases.

What do I do if my email provider isn't supported?

Please let us know via Ask a New Question. In the meantime, you can use the web browser on Firefox OS and visit your email from there.

How do I set the Screen Lock?

Please see Set Screen Lock on Firefox OS for instructions on setting the screen lock on your device.

Why can't I place Calls or send SMS?

There are many reasons why calls or messages cannot be placed/sent.

  • Broken, malfunctioning or no SIM card: Please visit the nearest cell phone provider to pick one up.
  • Invalid/ incorrect number dialed - Please double check the phone number you have dialed. You can also see Make calls and access voicemail on Firefox OS for tips and tricks.
  • Network issues - Please contact your service provider if you believe you are having network issues.
    • If you receive an error message like this:


      please check that your SIM card is inserted properly and that you are in an area where you are able to have reception.
If you are inside a building, try going near a window.
If you are travelling, you may experience connection issues due to your location. It is best to check with your carrier to see where reception is present.

Why can't I connect to a WiFi Network?

If you need help connecting to a Wi-Fi network, please see Get connected - access Wi-fi and cellular networks.

There are many reasons why you are unable to connect to a Wi-Fi network:

  • No networks available
  • Invalid password/key entered
  • WPS button not pressed
  • Weak WiFi signal

You can turn Wi-Fi off and back on to see if it helps, and reboot your device.

Why is the Radio not working?

Please note that a 3.5mm headset must be plugged in for the radio application to work. The headset will act as an antenna for the radio.

Your radio may not be working because of the following reasons:

  • No headset: You must have a headset plugged in for the radio to work. If you have it plugged in, please double check that it is properly inserted and secure.
  • No signal: You may not have radio signals around you, therefore the radio will not be playing.
  • Wrong radio station: You may be on the wrong radio station channel, please double check the radio station you are on.

You can also try by going to the home screen and open the application switcher to close the radio application.
If that does not help, try rebooting your device.

Why am I not able to take pictures?

You may experience trouble taking pictures because of the following reasons:

  • No SD card: remove and replace the SD card to be sure it is inserted correctly for use. Refer to the documentation that came with your device for detailed instructions.
  • Low memory space: Your phone may not have enough space to take and store the pictures.
  • Malfunction: The camera or phone may be malfunctioning.
Tip: Take the battery out for 15 seconds, then put it back in and turn on the phone.

Why won't my applications load?

There are many reasons why applications may not be loading when they are tapped on. Here are is what you can try:

  • Malfunction: Take the battery out for 15 seconds, then put it back in and turn on the phone.
  • Faulty Application: The application may be malfunctioning. Report the application by following the steps in How to report a faulty app in the Firefox Marketplace.
  • Low Memory Space: Some applications may require available memory to be able to run. Please check that you have enough storage on the phone.
  • Application not installed properly: The application may not have installed properly. Uninstall the application and then install it back. See How to Uninstall an Application on Firefox OS if you need help uninstalling.
  • No Network Connection: Some applications may require a network connection, such as WiFi or 3G. Please make sure you are connected to the internet.

Why can I not connect to Websites?

There are many reasons why you are not able to connect to sites using the Firefox browser.

  • No Network Connection.
  • Network Connection has no data being transferred.
  • Glitch
  • Software issue(s)

To fix this issue, you can try the following:

  • Reboot the device. By turning the phone off, taking out the battery and SIM card and then putting them back in and turning the phone back on may resolve the issue. If this does not resolve your issue, continue reading.
  • Clear your browser cookies
  1. Tap the browser tab to open the sidebar.
  2. Tap the gear in the upper right to open the browser settings.


  3. Tap the Clear cookies and stored data and tap OK to remove all stored private data and cookies.


How do I install an update?

If a software update is available for your device, a notification will appear in the status bar. To download and install an update, complete the following steps:

  1. Pull down the notification bar from the top of your screen to open the utility tray.
  2. Tap on the Update notification.
    The details of the available updates appear.
  3. Tap the update to start downloading it.
    You must be connected to WiFi to download updates.

  4. When the download finishes, a screen will appear to indicate that the update is ready to be installed.

  5. Tap the Install button to install the updates.
For System Updates, your phone will be unavailable while the update is being installed and the phone reboots.
You can set when to check for updates. Go to Device information in the settings, and visit the subsection Software Updates. You can also press Check now to check for updates right away.

Why do I not see any data usage on the Usage application?

There are many reasons why you are not seeing any data usage in the usage application.

  • SIM Card not inserted - a SIM Card must be inserted in order for the Usage application to run.
  • Tracking was not enabled
  • No data used - it is possible that you did not use any data
  • Data Usage was reset - you or somebody who had access to your device may have reset the data causing no usage to appear.

Enable Usage tracking

  1. Open the Usage application
  2. Make sure that a checkmark is placed next to what you want to be tracked.
    • If tracking was enabled, move on to the next subsection for troubleshooting.

What if I did use data and it's not showing?

  1. Press and hold the home button.
  2. Close the Usage application.
  3. Reopen the Usage applcation and check for results.
    • If closing and re-opening did not work, move on to the next subsection.

That didn't work, now what?

  1. Reboot the device.
  2. Launch the Usage application and determine if it is now working.
    • If rebooting did not work, please move on to the next subsection.

Closing and Rebooting did not work, what next?

  • Glitch - there is a possibility due to a glitch that data may not have been tracked. Since you have started using the Usage application now, data should now be tracked.
  • Get help from our community support team by clicking here

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