Check Sim Card Tray - S21

[michelle-s21]

I randomly keep getting this error on my 10 month old S21

The SIM is inserted correctly, facing upwards. 

I ordered a replacement SIM from Giffgaff and added this into the phone but I am still getting the same message pop up. 

Has anyone else experienced this issue ?  

[xSteveuk]

Hi
Give the sim card a clean
And delete the cache
To see if fixes the issue
https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/

Also try Turning off your phone
Wait about 30s and Power it back on and see if your phone reads the sim card

[annaafrica]

I too keep getting this error. I replaced both my sim cards AND the sim card tray. The phone is only 8 months old.  
AND i also tried the turning the phone on and off, flight mode, as well as deleting the cache. 
It is not helping!!! What is the going on Samsung??

[Praveen205]

Is issue resolved? Even I'm facing this sim card tray error from last few weeks. Changed new sim but same error..

[michelle-s21 · Accepted solution]

Samsung has to repair this. My phone was still covered by the warranty. 

[Praveen205]

Thanks Michelle! I will check further with Samsung service ..

[Mark TKO]

Hi anyone get any further with this one ?

Got my S21 back end of January and now I'm getting this Sim card tray error nearly all the time last 2-3 days.

Have noticed if I don't lock the screen and continually leave display on it doesn't happen. Lock the screen and leave for 20 seconds are so and there's 75% chance when I go to unlock I'll get this error screen meaning anyone trying to call me during the time its locked would go to voicemail. Not good.

Has to be a phone issue.

[Maxal1]

I to have this problem, not happy

[S21 G5]

I have the same problem, but no SIM card , using eSIM and still receive error .

[Mark TKO]

Wasn't expecting that with esim. That was going to be my next thing to do switch to an esim. Won't bother now. Thanks for the heads up