Sim unknow post UI4 update

Rockon — Sat, 15 Jan 2022 17:13:49 GMT

Samsung S20 FE undergone software update UI4 Android 12, post that my sim is showing as unknow. I tried switching off/ on device, sim re-insert, however phone is not able to detect the sim. Please help to resolve this issue.

Re: Sim unknow post UI4 update

lakshyagrover1997 — Sat, 15 Jan 2022 18:06:48 GMT

Bro backup data and hard reset

Re: Sim unknow post UI4 update

Rockon — Sat, 15 Jan 2022 19:35:32 GMT

Any other options ? I have data which I don't want to disturb.

Re: Sim unknow post UI4 update

cs-member13 — Tue, 25 Jan 2022 14:45:34 GMT

Dear Samsung Member,

Greetings from Samsung Customer Support!

We apologize for the inconvenience you are facing. We understand your concern and will help you resolve this. Kindly follow the below steps to resolve your issue:

Check device network mode settings
Please follow the below steps.

Step1: Navigate to apps screen and tap on Settings.
Step2: Tap on Connections.
Step3: Tap on Mobile networks.
Step4: Tap on network mode SIM1 or SIM2.
Step5: Select network mode.

Note: We recommend to set device network mode as LTE/3G/2G (auto connect) mode.

Check network operator settings
Kindly set device network operator as "Automatically".

Please follow the below steps.

Step1: Navigate to apps screen and tap on Settings.
Step2: Tap on Connections.
Step3: Tap on Mobile networks.
Step4: Tap on Network operators.
Step5: Select automatically.
Note: We recommend to set device network operators as LTE/3G/2G (auto connect) mode.
Step6: Tap on OK.
Step7: Registered on network.

In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

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