Hello,

Warning: Resetting your phone will delete all data stored on the device, including apps, calendar data, email accounts, and settings.

To reset the device, follow these instructions:

1. Open the Settings application.
2. Tap on the Device Information button.
3. Tap on the More Information button.
4. Tap on the Reset phone button.
5. Tap OK to continue or Cancel to cancel.

We hope that this fixed the issue you were having. Please report back to us if this helped!

Thank you!

Hi I have already done this twice, and the issue have been there straight from when I unboxed the phone and the very first calls

Resetting does not help, and also happens for other people with this phone model

Hi Swulff,

Thanks for using Firefox OS, I'm sorry you are having this crashing issue. Do you have crash reports enabled in the Settings > Improve Firefox OS? And does it ask you to send a report if that is set?

Can you tell me the number of colleagues you know of with this same problem and the number of restarts you are experiencing per day? Also, your region and carrier would help as well if you are comfortable to share that here.

This data will enable me to escalate the issue with our partners if needed or find a device where we can reproduce it and take a look at the crash reports in the meantime.

Thanks in advance, Michelle Luna, Mozilla Support Manager

Hi Michelle

Under settings, it is set to Ask, but it does not ask me to send one ever when this happens, so no reports have been sent. I have for good measure now set it to Always Send.

We are 4 people with this issue. The number of restarts vary depending on the number of calls. I have had 1 restart in 1 hour today, but yesterday I had 3 in an hour and sometimes less, it does however happen consistently and both in in- and outgoing calls

We are all in Dublin, Ireland, but using a Danish cell carrier called TDC. Phones are connecting to the Vodafone Network in Ireland

Hi Swullf,

Thanks for these details, much appreciated! I have filed bug https://bugzilla.mozilla.org/show_bug.cgi?id=1017604 to track this and get QA and crash experts to have a look.

If you have more details about exactly what you see (white screen/black, if the entire device reboots or just the dialer and if you get any error message that might help us as well).

Regards, Michelle

Hi

Thanks

I do not get any error, the phone vibrates very quickly (just as long as if I press a button on the keyboard during a text message) and then the phone reboots with no warnings or error messages.

No black/white/blue screen or anything like that, it simply turns off and quickly after the boot screen is there and phone is back again

Hi,

My QA lead has asked that you turn on WiFi as crash reports only get sent over WiFi. (We only see two crashes for Open C in our crash-stats.mozila.org for the Open C signature right now.)

Thank you in advance! Michelle

Hi

I have done, but as this is a work phone I some days have to switch back to my android to ensure stability and a service to my customers. I am trying to re create the issue as often as I have a chance.

Also, when I had it set to "Ask", it never asked me and it makes me wonder does it even generate a crash report ?

Hi

I just managed to reproduce it twice in a row, once with incoming call and once with outgoing

Crash reports are on and so is WiFi although I am not sure anything is being sent (the number on the link in the bug tracker is not rising :-) )

Is there any way I can extract log files from the phone and send on or something like that ?

I have posted back to the bug. The team is looking into the issue.

thanks

I have been in touch with the reseller reg this issue as well, they have advised that I performed an upgrade that was listed on ZTEs website on http://www.ztedevice.com/support/smart_phone/46d40c52-bed4-4cdc-9df9-01719cdf0a70.html

I did this, but the issue happened again at the very first call I made after the upgrade :-(

Hello! Sorry for my English. I confirm this problem. My phone hangs when I make a call or receive a call. For example, you call, you hear the first beep and the phone hangs with a white screen. Only helps to remove and insert the battery. This does not happen all the time. But it can happen at any time. Sometimes up to 3 times per day. To solve the problem, I tried the following steps: 1. Reset to factory settings. 2. Used firmware from Comebuy with root access. 3. Used Android KitKat 4.4 from Comebuy. 4. Tried to replace the SIM card. Unfortunately, none of the above did not help. I am from Russia. And my operator MTS.

Hi

Just wanted to update this thread, I received a software update a few days ago that appears to have resolved the issue. At least I have not had the issue for 5-6 days now.

My current software version FFOS_EU_EBAY_OPENCV1.0.0B06 OS Version: 1.3.0.0 Platform Version: 28.0

Seems to work

Hi,

I have the same problem. And although I have the same hard- and software, the problem still exists.

My hardware: ZTE Open C hardware version: P821A10B01

My software version: FFOS_EU_EBAY_OPENCV1.0.0B06 OS version: 1.3.0.0 platform version: 28.0

Any hints?

Thanks, Alex

Hi OnkelGonzo,

Do you have any new updates on your ZTE Open C? To check, tap on the Update Software icon on your home screen.

If the problem persists, you may attempt to flash your device with an image from ZTE:

• http://en.comebuy.com/developer-firefox-os-open-c.html

If you are technically savvy, you may even install newer, test versions of Firefox OS:

• https://developer.mozilla.org/en-US/F.../ZTE_OPEN_C

Please let us know if your problem is resolved, or feel free to Ask a New Question! =)

- Ralph

Hi Alex

You could try to build a new FFOS from scratch, just note that you cannot flash the entore FFOS to the phone (not sure why) but the important parts, Gecko and Gaia can easily be flashed.

Its fairly easy, I can recommend following the guide referred to in Ralphs suggestion https://developer.mozilla.org/en-US/F.../ZTE_OPEN_C

Hello everybody

Same thing here too : ZTE OPEN c FFOS 1.3.0.0 FFOS_FR_ZTE_OPENCV1.0.0B01

It crashes when calling or called, seems to happen a lot more when the battery is half-full. It only hangs and reboot no crash report seems to have been sent (always ask before send and nothing asked) The missed or crashed calls do not appear in the call log. I did not try to upgrade with the mentionned version above (FFOS_EU_EBAY_OPENCV1.0.0B06) Do you think I should try ? No danger for my phone ?

Thanks for your work !!

Hello, Yesterday a new Firefox Os version was succesfully installed on my ZTE open c FFOS_FR_ZTE_OPENCV1.0.0B02 (instead of B01). It came automatically. Will keep updated the thread.

As promised : update !

Nothing better with 1.0.0B02. Crash when called or answering. This is a real issue.

Hi SB84,

Thank you for your additional information. I updated bug 1017604 to reflect this.

Unfortunately, this appears to be a device-specific issue with the ZTE's build of Firefox OS for the ZTE Open C. I also updated the bug to reflect this and will be including our Technical Account Manager contacts so that ZTE can be informed.

Unfortunately, there is not much that Mozilla can do to resolve bugs introduced by manufacturer-specific builds. I would also suggest contacting ZTE's support channels directly for further assistance and resolution.

Please let us know if you have any further questions or issues with your Firefox OS device.

Thanks,

- Ralph