Hello. I’m Amira, Samsung Moderator Thank you for asking the question We wish you a happy day Based on your inquiry regarding the update
Please, we follow some steps as follows: Settings - more - more networks - mobile networks - network mode - you can choose a network other than the network used Maybe you can try Airplane mode and then turn it on again to activate the network If the same problem persists Please factory reset the device. Settings → General management → Reset → Factory data reset → Reset → Erase all. Before starting this step, please copy the phone data. It can be stored through the following link for the program Samsung smart switch http://www.samsung.com/eg/support/smartswitch/
If you have any other question, can you explain it to us We are at your service always Thanks for your time
