[Solved] Galaxy S20 FE Connectivity Issues. No Data or Can't Make Outgoing Calls

[GreenMycon]

Summary Issue: Starting in March 2022, some Samsung Galaxy S20 FE devices started having connectivity issues with carriers. This specifically impacted my phone, a US Cellular-branded phone S20 FE 5G. Specifically, this was a problem for the SM-G781U model number. At some point in March, a samsung update was released that created a bug/connectivity issue affiliated with making calls or connecting to the carrier data networks.

Resolution: This issue can be resolved by flashing stock Samsung Firmware to move you to the SM-G781U1 model number. You do not need to be rooted/have your bootloader unlocked.

Skills needed: low

Note: you will need a Windows computer w. admin privileges

Steps

1. Download Bifrost to download the official Samsung firmware. Model: SM-G781U1 Version: XAA (this is the carrier-non-specific version)
2. Download the patched version of Odin
3. Use Odin to flash SM-G781U1 firmware to the phone. You do not need a bootloader unlock (takes around 15 minutes)
4. Fixed.

 

[3mel]

this is the kind of post this forum doesn't have enough of.

 

[Superguy]

Thanks! My parents have been going nuts with this over the weekend. They have an unlocked T-Mo version used on AT&T. My mom took it to a store today and the idiot blamed it on the ROM and tried to sell them new phones.

I'm going to send this to my dad and have them try. I'll report back.

Thanks!

 

[Superguy]

How do you get it in to download mode? I've tried the methods I've found online, but I keep ending up at the recovery screen.

NM got it.

 

[Superguy]

I got it into download mode and sent the files. Log shows two files it sent, then it's just sitting there. It's been almost 15 minutes and nothing's really happening. Did I do something wrong?

Wonder if it's a Windows 11 issue.

 

[Adavis413]

Hi I recently purchased a refurbished phone and it won't connect to the mobile data. The first one i had do this I sent back. But now the 2nd won't either. This one says the model # is SM-G781V. Does the instructions you posted work for this model or is there something else I have to do?

 

[Tigerevo]

Sometimes quick fix is toggle airplane mode on and off. You can reset network settings. Also look up your providers APN settings and be sure you add them in your phone and select that one.

 

[ChrisxReign]

Hi I recently purchased a refurbished phone and it won't connect to the mobile data. The first one i had do this I sent back. But now the 2nd won't either. This one says the model # is SM-G781V. Does the instructions you posted work for this model or is there something else I have to do?

Same issue here on SM-G780G/DS

 

[ChrisxReign]

Sometimes quick fix is toggle airplane mode on and off. You can reset network settings. Also look up your providers APN settings and be sure you add them in your phone and select that one.

I already tried this but sadly it doesn't fix the problem