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XZ2 & Android 10 - 52.1.A.0.532
Just received Andoid upgrade to 10 52.1.A.0.532 - most of the functions seems to work without any hassel. What I recognized is, that the fingerprint reader is responding with a much bigger delay than before - seems to be a high lag time. Anybodey else with same xperience or any other issues?
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XZ2/XZ3 are just too old to handle Android 10 properly it seems, too many problems. Maybe Sony knew beforehand ( if they done some testing then yes , of course they knew how couldn't they with rendering devices almost useless ) .......and rolled it out anyway, banking on people buying new Sony Xperia 1/5 devices. But that would be awful behaviour regarding their customers.

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XZ2 isn't old. Look at specs of the latest mid-range smartphones. They have worse or similar (in terms of different benchmarks) hardware.
It's Sony's fault. Such a shame. And I was assuring people, that Sony smartphones are really good thanks to their "long-term support".
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ZX2 was build around Android 9 and just works better in this environment it seems
I hope that the XZ2 works with Android 10 flawless and bugfree in future, too.
I just wait until 1-2 more updates and keep an eye on forums.
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I am so sad I upgradet to Android 10 since it worked perfectly on 9.
This is unbearable! So laggy like I have 10 Year old phone.
FIX THIS ASAP
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Android 10 just does not work same as Android 9 on our XZ2.
Downgrade is the ONLY option fo have a fully working mobile.
My work colleague updated his XZ3 to A10 and it's almost unusable , he's close to throw it against a wall.

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My recommendation: disable Digital Wellbeing. It helps to make XZ2 slightly faster.
Disable the standard gallery app and install another one, if you've got any problems with it. I can't transfer screenshots to SD card without creating broken copies.
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how can I downgrade? Root is must?
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No, when you flash a new firmware you write over the whole harddisc ( of a computer so to speak ) So you just overwrite the old firmware
There are tools think name "New flasher" and some other tool which grabs the firmware over the internet and installs it on your device ( connected via USB to your computer )
You have to Google it, never done it myself but the steps are easy.
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Downgrade from one major release to another does not work and is NOT recommended unless you risk to trash your device - folks that tell you that a downgrade is possible and easy should pay for your dead device afterwards!
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I did downgrade without any problems. It took about 15 minutes and everything is OK now