02-02-2021 06:02 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
02-02-2021 06:30 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
02-02-2021 06:34 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Press and hold the power button
When you see the power off and restart option press and hold power off
It will change to safe mode
Tap safe mode and the device will restart. now test your device out further.
02-02-2021 06:37 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content

02-02-2021 08:01 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
@Caroline1991: If you notice an improvement while you're in Safe Mode, and the phone no longer restarts randomly, then please restart the S21 Ultra as you would normally and uninstall any third party apps, as the issue is likely to be stemming from an external source.
03-02-2021 07:46 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Hi Caroline,
There's also an option in the automation part of device care that has auto restart . That could be the reason it's doing it as well
03-02-2021 07:51 AM - last edited 03-02-2021 08:00 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
I have the same issue crashes/reboots/freezes several times a day.
My post on the topic:
S21 Ultra Issue crashes/reboots/freezes several times a day. - Samsung Community
- Tags:
- SAME
04-02-2021 01:34 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
I'm experiencing the same issue. My phone usually restarts in the morning, but I've also noticed it happen randomly at other times in the day. This never happened with my previous s7 with the same apps installed. The auto restart setting is turned off on my phone. Please let us know if you figure out what is causing this. I have lots of apps I use on a regular basis and reinstalling each of them sequentially to try to figure out which one may be causing the problem is not really feasible. I would be working on this for many days if not weeks.
06-02-2021 05:14 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Mine starting doing the same thing. Random restarts one after another.
07-02-2021 01:19 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Might help you all but I found the issue appears to be when you use smart switch
I reset mine again yesterday. Didn't use smart switch and its not restarted since
Appears some setting you transfer causes issues or did for me
Probably jinx myself now but I'll update again in 24 hours
