Hello. I’m Aya, Samsung Moderator Thank you for asking the question We wish you a happy day Make sure that the device does not encountered any issue like dropped in any liquid or fall on solid floor Change the network mode and see if that will make any difference through settings – connections – networks – mobile network settings – network mode Check if calls can be made after switching the phone off and on. check the device with another SIM card try the sim card in different Mobile phone to check whether the issue with the phone or the Sim card if another SIM card works with the device kindly contact with the network provider in order to fully assist you
If you have any other question, can you explain it to us We are at your service always Thanks for your time
