Galaxy A55 keeps restarting after One UI 7 update

[hesham_zahher]

Hi everyone, I'm experiencing a serious issue after updating my Galaxy A55 to One UI 7. 

The phone keeps restarting automatically, but it only happens when I'm not using it — for example:

While it's charging

At night while I'm sleeping 

Or even when it's just in my pocket and idle

After the restart, it shows the Android logo, then a black screen with the message “ONE UI apps optimizing,” and then the phone boots normally.

However, it doesn't stop there — the device keeps restarting every 5 to 10 minutes as long as I'm not using it. 

Has anyone else faced this issue? 

Is there any known solution or fix? 

Thanks in advance!

[MdTajammul]

Try these steps to fix the auto-restart issue on your Galaxy A55 after the One UI 7 update:

Wipe cache partition:

Turn off phone Hold Power + Volume Up until recovery screen appears Use volume keys to select Wipe cache partition, confirm with Power button

Turn off Auto optimization:

Go to Settings > Battery and device care > Auto optimization Disable Restart when needed

Safe Mode test:

Hold Power > Long press on “Power off” > Tap Safe Mode Leave phone idle and check if it still restarts If not, an app might be causing it — uninstall recently installed or updated apps

Software update:

Check Settings > Software update for any patches Samsung may have released

If problem continues, back up your data and consider a factory reset or visit a Samsung service center.