I update my Samsung m35 5g for security patch after i updated it 5g signal not working my 5g is not working i reset all the settings but nothing happens

When i scroll up in settings or any application the test got red colour when I scroll up and down also heating issue is not solved what is this Samsung?

Heating issue in Samsung galaxy m35

I have SM-G781U Samsung galaxy s20 fe AT&T and have airtel sim...I don't have mobile data in control panel even in edit I check all options there is no option of mobile data...Only in settings.

I try to update my Samsung galaxy s20 fe AT&T (SM-G781U) through Samsung smart switch in PC (windows 8.1)...first process complete it and then show me your battery is low and I unplug it from PC and charge my phone then I connect again but it shows m...