topic Re: Samsung S21FE no mobile network/service (tried everything) in Other Galaxy S Series

Samsung S21FE no mobile network/service (tried everything)

jedrzej_ — Sun, 07 Jan 2024 13:44:50 GMT

Hi, a couple of days ago my Samsung s21fe started to have issues with connecting to mobile network service on both of my sim cards. I cannot connect to any network, it says "service unavailable", or "emergency calls only". Calling doesnt work, mobile data doesnt work, sms does not work on either sim card. I have tried this:

1. Put the sim cards into a different phone. They worked, so the problem is on my phone.

2. Restarted my phone multiple times.

3. Turned airplane mode on and off.

4. Reset network settings on both of my sim cards.

5. Manually chosen mobile network provider, reset APN settings. Then also reset to automatically choosing network provider. Neither fixed the issue.

None of these methods worked. The icons on top (for both simcards) still either look like this 🚫, or show very weak signal, but even then I cannot call because it says "emergency calls only". Mobile data does not work on either simcard, roaming or not roaming. All of these worked when i placed the simcards into a different phone. My s21fe phone did not fall, was not damaged in any way. I have never had this issue in the past. It randomly appeared one day. Will a factory reset help? Is it a hardware problem? Please advise.

Re: Samsung S21FE no mobile network/service (tried everything)

Mrachit — Sun, 07 Jan 2024 17:41:13 GMT

Having same problem as yours but my had fallen once

Re: Samsung S21FE no mobile network/service (tried everything)

Ashish1990 — Mon, 15 Jan 2024 00:14:40 GMT

Even I am facing the same issue. This happend first coz of Oct 22 patch update and after few updates the phone became normal. Again now after oct 23 patch update , i am experiencing the same issue. My phone is S22 ultra. I am waiting for the next update desp. This has been the worst update and samsung doesnt really care about it

Re: Samsung S21FE no mobile network/service (tried everything)

Members_1jQ5k3j — Fri, 19 Jan 2024 05:37:59 GMT

S21 FE 5G. Have this issue with Lycamobile card. In Phone About, SIM status crashes but Device Healthcare says that SIM and network is ok. Network settings reset - take no action

Re: Samsung S21FE no mobile network/service (tried everything)

lestatab — Sun, 28 Jan 2024 19:26:34 GMT

Hi, i have the same problem, the best option i found (after reset network settings, factory reset, new sim, new carrier, boot without sim and wifi, manually set apn, clear cache from recovery) was to change csc to GCF, disable cidmanager from adb and set Preferred Network to LTE only.

I described my whole process here https://xdaforums.com/t/solved-poor-weak-signal-after-update.4651455/

Re: Samsung S21FE no mobile network/service (tried everything)

Packledawn — Wed, 03 Jul 2024 22:15:34 GMT

Remove any cable attached to the phone

restart it.

Keep the power and volume up button held down the entire time until it boots up. Do not let go!!!

You do NOT want to get to the screen where you can do a factory reset etc. of the device, hence removing the cable. Something happened to my phone...no idea what, that caused it to give this error. Eventually after continually removing/wiping the sim, restarting the phone, resetting the network etc. I might gain access after a couple of days or so, but this fix works for me 100% of the time, first time.

As to why? No idea. I'll take a video at some stage. Hope this info is useful, and if it works for even one person, I'll be happy!

Re: Samsung S21FE no mobile network/service (tried everything)

LILMOMMA5858 — Wed, 17 Jul 2024 10:37:43 GMT

I'm having the same ***** happen and it doesn't make sense but I'm so over it

Re: Samsung S21FE no mobile network/service (tried everything)

Mutsco Isi — Tue, 23 Jul 2024 09:36:17 GMT

Same here, its because of the latest updated version, we'll just have to sorry to tell you this but you'll have to wait for the latest software update for the device then everything will be back to normal, i also have the same problem with my s21 FE like you. Samsung doesn't seem to be concerned with this issue so let's just wait and see.

Re: Samsung S21FE no mobile network/service (tried everything)

Naresh Chavada — Tue, 01 Oct 2024 19:44:24 GMT

Yeah u have same problem now what to do

Re: Samsung S21FE no mobile network/service (tried everything)

Jbop100 — Wed, 06 Nov 2024 12:16:35 GMT

Have u tried paying your bill

Re: Samsung S21FE no mobile network/service (tried everything)

Pyneface — Sun, 10 Nov 2024 02:11:26 GMT

When I read your post it was as if I had typed it out! I couldn't have made it any better. My phone is now doing exactly as you described. I tried all the fixes I know of and they haven't helped. This is very frustrating! It started happening just after the most recent update.

Re: Samsung S21FE no mobile network/service (tried everything)

Lotte81 — Mon, 18 Nov 2024 21:19:30 GMT

My phone has been the same since the November 1st update. Have you found a solution?

Re: Samsung S21FE no mobile network/service (tried everything)

Dhanush_parker — Sun, 05 Jan 2025 18:09:33 GMT

Hi buddy,

I think it is a software update issue. I'm also facing these is issues you mentioned but the problem solved temporarily by restarting the mobile and in couple of hours the problem causes again. SO ITS NOT A HARDWARE PROBLEM. The customer care person blames the network service provider.

THE PROBLEM CAN BE SOLVED BY AN ANOTHER PROPER SOFTWARE UPDATE.

Re: Samsung S21FE no mobile network/service (tried everything)

beanzzbunger — Sun, 19 Jan 2025 00:38:09 GMT

I've also got the same. Any one got any fixes?

Re: Samsung S21FE no mobile network/service (tried everything)

Pawandeep Singh — Tue, 25 Feb 2025 04:00:59 GMT

I faced the same problem. I went to a service center, and they told me that most likely, the motherboard is gone. It will cost INR 30,000 to repair. The phone was just one week out of warranty, so I opted not to get it repaired for the time being. I went home, Did a software update, and voila, it worked for a month. Now, it's got the same issue, so it's most likely a motherboard thing. I never thought I would face this sort of an issue with Samsung.

Re: Samsung S21FE no mobile network/service (tried everything)

NicP123 — Sun, 23 Mar 2025 18:20:02 GMT

My sons phone is the same any ideas on how to fix it?

Re: Samsung S21FE no mobile network/service (tried everything)

matrimanish — Thu, 24 Apr 2025 14:09:07 GMT

I am getting exactly same issue from last 3 days. I remember that i received updates and installed and at same time my phone fallen . So not sure why it is happening. If i move to other location it is working fine. Then i can't suspect hardware issue.
I can suspect that whereever the signal is weak, it is unable to capture but other brand mobiles can capture signal perfectly . That happened after update. How to resolve now.

Re: Samsung S21FE no mobile network/service (tried everything)

Pawandeep Singh — Thu, 24 Apr 2025 14:59:36 GMT

So mine turned out to be an hardware issue. Some issue with the network antennas, got it repaired from a local store and it has been working fine for the past 2 months now

Re: Samsung S21FE no mobile network/service (tried everything)

Members_GmIaI0n — Sat, 10 May 2025 07:53:14 GMT

I have the same problem in my phone.

Re: Samsung S21FE no mobile network/service (tried everything)

Yogesh_Otaku — Sun, 06 Jul 2025 15:47:45 GMT

My S21 fe mobile also experienced the same issue. Additionally, I have also tried every possible method. However, it was not working, so I repeated the process several times, and suddenly it was resolved.