Is there a way I can temporarily block my sons SIM to prevent the usage of his phone when not in local connection. I don;t want to cancel completely but would like to be able to block or restrict usage as a punishment.
Thank you for your post and welcome to the forums.
There isn't an option on your online account to do this but what we can do over here is a couple of things;
Fully suspend the account until you want it un-suspending.
Block everything outgoing and just have incoming only.
Turn data off, turn calls or texts singularly.