How do I fix restricted access changed: voice service is blocked problem?

[AC Question]

how to fix "restricted access changed: voice service is blocked" problem?

hello. I have a Lenovo ideatab a2107a-h
I got a prepaid sim that has 3g.
my problem is when I start to connect via data, an error "restricted access changed: voice service is blocked" keeps popping up.

 

[B. Diddy]

Re: how to fix "restricted access changed: voice service is blocked" problem?

Welcome to Android Central! Are you sure the APN settings are correct for the carrier?