I’ve had no service after the 11.1 update

I’ve had no service after the 11.1 update. I’ve done reset network settings, and it help for a few hours and I’m back to no service. I try change my sim...work for a couple of hours and again "no service".

i Tty all recomendations (reset networtks, resets setings to factory, pull and put de sim card, etc)

The carrier says that a lot of people have a same problem on this week

Iphone SE - 64 gb. IOS 11.1.1

Carrier PERSONAL of Argentina.

Please send me help!!