Yes. I have updated my s21. For me there is no issues.

This is happening because of software updates. I have got a pink line on my s21 5g. Unfortunately we bought it from Gulf. Now they are denying free replacement. What to do now. It is not worth paying another 15 to 16k for the repair cost.

Wait and watch others opinion. Don't buy u variant. Which is for USA. I do prefer samsung only or iPhone. No to Chinese maid.

5g consume more battery. Better not to use 5g or you can sell and buy an Indian variant. This is my opinion

Go to nearest customer service centre. They will help you. GSM technology we use here in India and CDMA technology they use in USA. That is the reason