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Tips & Tricks

If you want to get the max out of your Xperia phone then check out Xperia tips page.

Tablet Z dims to 48% after c.5 seconds

One time poster
Message 1 of 3
Message 1 of 3

Tablet Z dims to 48% after c.5 seconds

All configurations tried, including Mobile Bravia engine toggle and adaptive display toggle but tablet keeps returning to +48 on -100 to +100 scale.

Also tried using lux to fix but same problem.

Would appreciate help as this has effectively bricked the tablet in all but a blackout room.

Forum Legend
Message 2 of 3
Message 2 of 3

Re: Tablet Z dims to 48% after c.5 seconds

have you tried booting to safe mode?


disable adaptive brightness

adjust sleep time

disabling smart backlight control



does your light sensor work? try to run diagnostics.


try to repair your device software using PCC

Learn to take care and troubleshoot your Device here:
Xperia Support by Sony:
Message 3 of 3
Message 3 of 3

Re: Tablet Z dims to 48% after c.5 seconds

Do you have any brightness control apps that could be conflicting with your system settings, power saving apps too.

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