Unable to get Mobile data access after One UI 6.1 update

[rocketman18]

Hi All,

Is anyone experiencing mobile network issue after upgrading to One UI 6.1?

Since I upgraded despite mobile data turned on and It displayed on the taskbar icon 4G+ OR 5G, I still unable to get on the Internet. 

I have run Device Care diagnostic and network and sim card checked ok/no error found. I have reset mobile network still nothing. 

I have taken the device into the mobile network company for further investigation. All checks performed again, a new sim card was used in SIM 1 tray failed to get on the Internet. 

The new SIM card placed in another phone and EVERYTHING worked. The SIM was placed back into my S23 ULTRA and still no access to the Internet. 

SIM 2 tray used with the new sim card and got access to the Internet. 

Can I revert to One UI 5.1 after upgrading on 28 Mar?

I have further updated my phone to 1 Apr security but the problem still there?

Is anyone experienced the same?

Awaiting your help/support. 

Regards

Rockman18

[Tourbillon De La Vie]

So, sim1 is playing up. I'm assuming no esim Contact Samsung tech support 

[Piper123]

Hi there

A small number of users have reported a similar issue.

You mention you've changed sim, tried sim elsewhere, reset mobile network settings etc

Have you checked that your network APN and password are correct? (When you reset network settings these should have reset via a network update but doesn't always work).

Sadly it is (almost) impossible to go back in your OS and even if you tried it comes with massive risk and a loss of warranty.

[rocketman18]

Thank you. I will contact the Samsung Technical support team.

[rocketman18]

Thanks Piper123.