topic Re: SIM 2 showing Unknown number in Other Galaxy S Series

SIM 2 showing Unknown number

Rahul Patil — Sun, 07 Jul 2024 13:08:21 GMT

I am using Samsung galaxy s21 fe.

I am using 2 sim card from last 8months, In SIM 1-Jio & SIM 2- Airtel and it is perfectly working but from last 5-6 days my SIM 2 showing Unknown Number so changed the SIM card slot from SIM 2 to SIM 1 but now same issue showing in SIM 1 slot and SIM 2-Jio working fine.

So I inserted my Airtel SIM in another device & it is working in that device so I reinserted in my device and it is showing same Unknown Number issue.

So please help me to resolve this issue.

Re: SIM 2 showing Unknown number

AndrewL — Sun, 07 Jul 2024 14:30:18 GMT

@Rahul Patil: Is it saying 'Unknown number' for SIM2 in Settings > About phone, as well as Settings > SIM manager? Do you still have access to your network features for the affected SIM i.e. Calls, texts, mobile data?

Please note that SIM cards have a temporary number assigned to them before a personal number is added by your network. On occasion, this number will show up in Settings > About phone instead of your phone number, or it will say 'Unknown' where the number should be populated. This is simply a read error, and you should find that your network capabilities are unaffected, and you can still be reached on your network-assigned number. If you are concerned, then I recommend reaching out to your network provider to request a SIM swap, to see if this resolves the issue.

Re: SIM 2 showing Unknown number

Piper123 — Sun, 07 Jul 2024 17:41:42 GMT

Hey there and welcome to the Samsung UK Community Forum

I note you are using Jio and Airtel so clearly you are in India.

I would advise you to reach out to your local Samsung Community Forum for guidance as systems differ around the world.

Re: SIM 2 showing Unknown number

San041 — Thu, 08 May 2025 09:42:50 GMT

I have samsung m21 2021 edition. In device both the slots have BSNL SIM. Slot 1 shows " Unknown number" but slot 2 is showing the exact BSNL number. I replaced the SIM but didn't get the desired result.

Re: SIM 2 showing Unknown number

San041 — Thu, 08 May 2025 09:48:40 GMT

I have the same issue in M21 . n both slots BSNL SIM is active. slot 2 shows the number. Slot 1 shows the - unknown number. I replaced the SIM of slot 1 but not get the desired result.thanks

Re: SIM 2 showing Unknown number

babs66 — Tue, 08 Jul 2025 02:31:21 GMT

I'm having the same problem on turning phone on the sim manager page comes up and the sim are unable to be turned on. I think it's a virus.

Re: SIM 2 showing Unknown number

Precious121 — Sun, 01 Mar 2026 14:35:43 GMT

Only SIM2 showing unknown