Original topic:

S21 black flashing screen

(Topic created: Sunday)
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ZD369
Asteroid
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Galaxy S21

 

this 1.5.2025 , has anyone else had system ui issue/instability /black screen flashing after latest Samsung update ????

 


from impression they made some updates not so long back correcting bugs after each subsequent updates....

 


the inconvenience became too much when screen didn't turn on to power switch fir like a minute at times....💢💢💢

 

wipe cache hasn't been a long term solution which was why i explored aggressive old /unused app purge....

 


i looked into this matter and report suggest camera blocking app could cause system ui issue so i uninstalled them and phone was stable seemingly for a little bit but problem came back so i did a second round of app uninstalling as aggressive approach......

 

 


my model s s21 5g...

 

and screen may flash black just placing phone on table/ go black and delay response ,seem to respond to minimum vibration....💢💢😑

 

i ran :hammer_and_wrench:️diagnostic with Samsung member app :hammer_and_wrench:️ for any error with system ui, report did say problem whic is why i lean toward Samsung update issue.....

 

 

 

 

 

this 1.5.2025 , has anyone else had system ui issues/instability /black screen flashing after latest Samsung update ????:hammer_and_wrench:️:hammer_and_wrench:️:hammer_and_wrench:️

 

 

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4 Replies
ZD369
Asteroid
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Galaxy S21

 

 

also the screen flashing black in response to minor tremor doesnt happen in safe mode which lean more toward software than hardware ???
so when the next samsung os update???

 


and which app is causing conflict?? 🧐

 

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MrGhoul
Sun
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Galaxy S21
Since the flashing screen doesn't happen during safe mode, it would mean a third-party app is causing the issue. Safe Mode disables all third-party apps and runs only essential apps and services. You would need to locate the third-party app and uninstall it from the phone.
ZD369
Asteroid
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Galaxy S21

 


ok weird thing is i didnt have any problem like this before os update , so is it possible next os update would fix this???

but the wait till then can be unbearably inconvenience having deal with lag system ui response....


and going through rounds of app purge been somewhat inconvenient especially if they weren't really the problem to begin with if they weren't conflicting before os update....

😑

 

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meself
Honored Contributor
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Galaxy S21
I'm with Mrghoul on this being a third party app