I recently removed my SIM and put it back in again. From then on my SIM does SMS and calls only when I turn on LTE in the mobile network section.

Even if internet is off it works with LTE. Why did this happen? What would happen if I put the SIM in another cell phone?

In my cellphone both call and SMS are gray and not active. Even if LTE is on they are off, but I do get SMS/call. What could be the problem?

  • 1
    Where do you live (are there still 2G / 3G networks available)?
    – Robert
    Sep 5, 2022 at 10:18
  • sorry but It is not about living I think since after removal of simcard and putting back it again it happened. anyway I think yes 3G is available. I just want to know working with LTE always is Ok? Also, LTE is working without net connection. I am naive in this subject at all so I am not sure LTE is related to net at all or not? Sep 5, 2022 at 13:45
  • Maybe my question was vague. Actually it is not related to the internet. It is just about when I turn on the LTE on voice call I could get sms and call. But when it is off I could not. The net is always off Sep 5, 2022 at 13:50

1 Answer 1


I am sure the others will help better, but in my opinion try to: set the network to automatically scan / choose available networks. Maybe the area lacks basic 2G / GSM signal? Or there is an issue with the phone / network provider. Just a few hints. Restarting the phone always helps.

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    – Community Bot
    Sep 5, 2022 at 7:39
  • Thanks. But the issue is after removing the sim and put it again this was happened. I hope sim will continue its function since I gave it to my friend to do my works with it and I have not access to it. Yesterday this was happened. Sep 5, 2022 at 8:27

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