It would seem there were new directives issued a week ago
"Sixth, the operators will have to limit the validity period of SIM cards of foreign tourists to no more than 60 days.
Foreigners will not be allowed to top up the call value to extend the service usage after the service expires. They will have to register to authenticate their ID with the operators again to renew the usage."
****************************************************************************************
*****
44/nbtc-endorses-8-cybercrime-measures