S21fe

[Raghulvaradarajan]

This is the 6 th time I'm facing this issue black patch on corner after restart it back to normal 

If it had software glitch or app glitch then it should shown on screen shot as well 

But it not shown in screenshot 

Only on display I took snap from other mobile 

Photo took from other mobile.

Sscreenshot taken from s21fe 

[TMOV]

Contact customer support bro . This might be due to new update. I have the same mobile too. If it's due to their mistake means then they will change your screen for free.

[Raghulvaradarajan]

After restart it get back to normal
I can't prove it to local service center

It's a new mobile not even crosses a month

[TMOV]

Don't restart bro take the mobile to the nearest samsung retail store or service center asap or take a picture and prove

[Raghulvaradarajan]

Hmm bro next time I follow the same as you said

[TMOV]

Yep bro

[vivek1989]

Or take the screenshot when the black thing comes on the screen ,so that u can show evidence that u r facing this thing or dont restart the phone.when the phoneexperiencws such thing dont eestart take it to the nearest service centre(authorised ) immedaitely bro

[KumarUjjawal]

take screenshot or screen recording with changing wallpaper tio

[vivek1989]

Onething u do enable safe mode

[Raghulvaradarajan]

Whenever it restart or power off it get back to normal
Safe mode mobile get restart obviously back to normal
One or two time is manageable but this is sixth time I'm facing the same
Also newly purchased device not even crosses a month

I hope support guy will guide for the post