s8 plus network issues

[arsalan2]

hi, I bought new s8 plus device and having network issue and dropping calls.. most of the time mobile number appear as switched off.
I tried with different SIM cards but same result..please suggest solution

[arsalan2]

anyone help me solution network not registered issue on s8 plus

[fahadM]

Do format for the network settings

[arsalan2]

how? I have done factory reset no change

[David4]

mobile number appears as switch off means ?

[dawodnasr]

same problem happened to me today. i brought my s8 just week ago