Help us out.
What device?
We have no devices, we are a question answering service only.
It sounds like you may have a telephone problem, maybe.
Perhaps you might ask your friends for the names of the phone systems in your area, and then call each of them to ask your question.
God bless your efforts.
"Try checking your SIM card number, make sure it matches with what Sprint has,i had the same issue no 4g and the error you were mentioning. My SIM card number was different then what Sprint had, they just updated the number i gave them and works awesome."