S21 keeps restarting. Samsung team remotely accessed the phone and check all settings and updates. All good. Used safe mode, still happens. Factory reset the phone. It restarted as soon as I turned it back on before I could set the phone up. Sent it to samsung to be repaired. It was returned with them saying it was working to manufacturing spec. Turned it on, still restarting. Factory reset again. Didn't use smart switch. Safe mode again. Still restarting. Sort it out Samsung!
Thank you @Alistars, I have sent you a private message requesting some additional information. In the meantime, are you also able to send us an Error Report via the Samsung Members app so that our research team can look into why this occurred?
Samsung Members > Get Help > Error Report > Lock up/Restarting > Details and frequency of issue > Tick send system log data > Send.
These error reports go to our team for analysis. Once assessed, you will receive a response from our team via the notification bell in the Samsung Members app.
I've had the exact same issue, multiple random restarts up to 15 times a day, I've sent my S21+5G to the iCure repair centre in Granville (why does Samsung use dinky 3rd party repairers, they're a multi-billion dollar global corporation!) and the iCure centre found no fault and returned the device. The issue has become worse, I can barely use my phone. I'm actually on call with the Courts and need a working phone, yet each time I am told to send it back to the Service Centre (which means I am without a device for up to a week or two). Samsung Members tell me the error logs indicate hardware issues with AP and DRAM, yet the service centre run a few tests and say all is fine. Completely unacceptable and I'm appalled Samsung can treat customers this way. I suggest you think about going to Fair Trading and also look at your ACL rights.
