Solved The internet connection is gone

[Kunai]

Hello,
Since yesterday the internet connection, despite being started the procedure for recovery in a correct way, can not stay and the phone does not connect.
Is there a proper procedure to solve the problem?

[Kunai]

Hello, I have solved because the connection problems did not come from the smartphone but from the operator.
A website that monitors the performance of operators on the internet confirmed what I said.