S21 freezing and restarting since 3rd August 2024

[TheoNew]

Dear Samsung Community,

In the morning of the 3rd of August 2024, my S21 Ultra is no more usable as the phone systematically:

- freezes,

- gets hot,

- then reboots.

When it reboots, sometimes before the SIM code part, I have the One UI transition telling me it is optimizing applications til 100%.

I tried everything I found on Internet (wipe cash, safe mode...even putting the phone in the fridge to cool it...) but nothing works.

What should I do? I am really desperate...

Many thanks for the help and take care!

[Ferenc75]

Hi there,
Did you tried this way?

https://youtu.be/EYVknlK8Pwc?si=YThMFTX287sX99_T

[TheoNew]

Hello Ferenc,

Thank your for your reply!

Yes the cache wiping in recovery mode didn't work at all...

Still searching...

Ty!

[Ferenc75]

Factory reset also tried?

[TheoNew]

Well didnt want to factory reset...dont wanna rebuild my phone and transfer data + reupload data....my phone was well working with everything well set.

[Ferenc75]

Sometimes helps the factory reset. I know is a headache

[TheoNew]

Ty Ferenc...i guess if i dont find any solution thats what I ll do.

Im pretty sure its the last One Ui security update which has a conflict with an installed app. 

If i find a solution, i ll keep posted on the thread. Have a nice day Ferenc!

[Ferenc75]

Hopefully you can short. If anything else I can help free to contact. Have a nice day

[Members_Q760tgo]

Same issue, same timings. Have you managed to find a solution yet?

[TheoNew]

Hello,

Well not yet...it got worse actually as many reboot made my phone requiring 24h before new restart.

I am verh disapoointed, I also tried the Good Guardians and performed a check on the apps to identify the potential conflict but nothing worked. 

I'm still trying. I have been with Samsung for more than a decade since the S2. I guess I'm going for an Android rom stock Pixel next time.

This update is very too disappointing. 

I keep you inform if I find a way to solve this issue.

Take care!