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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
We are sorry to hear that you are facing an issue with your device.
It will be our pleasure to assist you. To solve any issues within the application,
which can always occur after an application or software 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
If you have any other question, can you explain it to us
We are at your service always
Thanks for your time