Constant restarting.

[BRIMACJ]

I'm having a persistent issue since the last update, have tried a number of things including wiping cache, checking WiFi settings, restarting in safe mode and checking 3rd party apps (no new apps installed recently). Thought it might be worth checking here in case I'm missing something. 

 My S21 FE keeps restarting when connected to WiFi, or drops off the WiFi. Before it restarted WiFi kept disconnecting for a few days, but now if I'm connected to WiFi the phone just shuts down. I think the longest it's gone without restarting when connected in the last 24 hours is about an hour, but yesterday was happening every few minutes until I turned WiFi off. 

I work where I don't get signal so have to be on the WiFi. 

[Rob99]

Have you tried turning the network off? Keep WiFi on. If you can't get a signal, the phone may be constantly searching, causing overheating and shut down.

[BRIMACJ]

I haven't no, but it only started happening on Monday where I was at home without a signal issue, but we do have a router and a booster so it seemed to happen when swapping from one to another.

[Obsydian]

Hi to clarify do you have a boot loop issue or just a WIFI issue you fix by having to keep rebooting?

[Obsydian]

Otherwise, you have done everything, including safe mode.

Options left are a total (pain) factory reset, if that fails best to contact Samsung and get it in for repair, they will want it factory reset.

[BRIMACJ]

It reboots itself, I'm pretty sure it does this as it loses WiFi signal

[BRIMACJ]

😭😭That's what I was dreading.

[Obsydian]

Maybe a fault with the WiFi board, best backup, reset, hopefully that works, if not book it in,

[BRIMACJ]

Update- I have factory rest the phone and it is still an issue this will be the last Samsung I have. It had a system Update on 14th August and now it doesn't work.