Android's settings and automatic screen dimming can make it difficult to read the screen in Thunderbird. Here's how to reduce screen dimming and make Thunderbird more readable.

General tips and tricks

• A dirty proximity sensor (located near the front facing camera) can cause your screen to dim. To prevent this, keep the area around the front-facing camera clean.
• Different manufacturers often implement different variants of Android and have slightly differently named Android settings. Also, setting names change in newer versions of Android. It is therefore impossible to give a comprehensive guide to the relevant settings for all Android devices for all Android versions.

Here are some specific tips that will allow you to find the relevant settings for screen dimming on your device: Look for Android settings under sections with words like:

• Eye comfort shield: Turn off.
• Power saving: Turn off or increase timeout before it starts.
• Battery saver: Turn off or increase timeout to prevent dimming.
• Accessibility and Display: Look for settings related to screen dimming, screen timeouts and lock settings and turn off all automatic screen dimming, extra screen dimming (often found in Android Settings > Accessibility > Extra dim) and increase timeouts for screen locking.

Thunderbird settings

Use Thunderbird's Dark Theme

1. Tap ≡ at the top left > tap the gear icon: at the bottom left.
2. Tap General settings > tap Display > tap Dark under Theme.

Third Party documentation

Google Android settings

• Turn on the Dark theme for more contrast. See Google's documentation: Turn on Dark theme & color inversion.
• How to turn off Extra dim can be found in Google's article: Change text & display settings.
• For more information on the features for low-vision assistance, visit the Android Accessibility Help Centre.