topic S21 FE - Stuck in restarting loop in Galaxy S21

S21 FE - Stuck in restarting loop

pushpraj — Thu, 26 Feb 2026 02:46:49 GMT

I have a S21 FE Snapdragon. My phone got discharged, switched off. I charged it up to 24%, used it for 2-3 mins, and suddenly the screen froze, and it started to restart.

Since then, it has been restarting from the Samsung Galaxy screen; it appears to restart, and this is happening in a loop.

I have tried to load in Safe Mode (Not Happening), tried clearning cache, no success.

Currently, I've discharged my phone totally and left it for a while. I'm thinking of charging it 100% and then trying to boot after 6-7 hrs.

Second, I'll factory reset using recovery mode, or I'll try to update using adb.

What should I do, I'm trying to get my phone switched on without losing my data.

Re: S21 FE - Stuck in restarting loop

MarvinMod2 — Thu, 26 Feb 2026 04:52:33 GMT

So you can boot to recovery... My advice is to reflash the stock firmware. Cant tell you how to do it here but XDA website can help or private message me. Your in a bootloop likely due to corrupted software.

Re: S21 FE - Stuck in restarting loop

alfredthm — Sun, 19 Apr 2026 18:00:37 GMT

Same thing is happening with me, but it randomly turns on for like one minute and keeps restarting. Did you find any fix? I can't currently reset my phone because my data is not backedup. Please let me know if you got any fix. Thanks in advance!

Re: S21 FE - Stuck in restarting loop

pushpraj — Sun, 19 Apr 2026 18:18:41 GMT

The device was stuck on the bootloader screen. The service centre guy said that I need to change the motherboard, so I got it checked in one of my known unauthorised service centres. They checked and said it's because of RAM, so I got it changed (RAM only). And it's working fine as of now.