if manually converting all old phone numbers to new ones, it will take a lot of time and effort. moreover, the time to transfer 11 numbers to 10 numbers is not far away, expected
in the large-scale inspection on prepaid mobile subscribers, the inspectorate has discovered a variation of spam messages sent by the network operators, causing users to lose money
in addition to voice, messaging services are always selected by mobile users. however, with the price of messages currently at 100-300 dong, a few hundred sms messages a day is