Odd Freeze | Reboot Phenomenon

[user751201tmO21]

So, some folks have probably read my replies where I state my phone will "freeze, then reboot" seconds later (40+ times a day).

Something I didn't notice until yesterday.

I enable Force Dark Mode (FDM) in Developer Options. FDM is not a persistent setting between reboots - IOW, if you reboot the phone, FDM will be disabled, so you need to enable it once again.

Okay, so these "freeze | reboots" that happen, that sequence happens in a shorter amount of time than a standard Restart. 

When I visit the FDM setting in Developer Options, the FDM setting is enabled.

The other thing I notice - let's say I have Members app and Brave app running at the time of the "freeze | reboot" ... after the phone has rebooted and settles in, the Members app and Brave will be running.

So, this must be a soft-reboot of sorts, whereby Android logs the apps running, then restarts them.

It's almost as if Android itself, as a whole, is not restarting, but some portion of the OS that went flakey. 

[bigbad614]

I completely agree with you and am experiencing the same thing.

This is the scenario that I have mentioned before that I have only noticed when my phone is face up and I see it happen.

My Galaxy Watch 4 never even notices it happening and I never receive a "disconnect" notification.

Cheers!

[user751201tmO21]

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For me, my Watch3 does the "not connected to phone" vibration.

[bigbad614]

Well, at least you have that. Unless I stare at my phone, I only become aware the next time I launch the Members App and it wants to submit a crash report.

[USBetaModerator]

Hello @user751201tmO21  @bigbad614  

What you are experiencing is a system server reset. Your android framework is crashing and rebooting itself to restore functionality.  Please try the below. 

[Settings] → [Applications] → [Menu] → [Special access] → [Optimize battery usage] 
→ Change the filter (upper left corner) to "All"  
→ Find the browser related apps, and change the option from "ON" to "OFF" to exclude the app from "Battery optimize target" 

Regards
One UI Beta Team

[user751201tmO21]

Thanks, but "Optimize Battery Usage" is not an option for my 21 Ultra Unlocked under Special Access

And I did a global search in Settings - Optimize Battery Usage does not exist in Settings, for me

[MochaVex]

That solution could possibly be present in Beta 3 and that's not released for our region just yet.

[MochaVex]

I can manually trigger a freeze and soft reboot by attempting to change System UI tuner settings in developer options, so I'm backing your claim on the System UI being buggy somewhere.

[user751201tmO21]

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Interesting ... thanks for feedback!