Changing SIM to a new device only requires facial authentication via the app, if the subscriber has complete information

Change SIM to iPad, smart watch, 4G transmitter with a quick 3-step authentication process on My VNPT/My MobiFone in just 2 minutes! After several times testing the network's new regulations when changing devices for SIM, I have come up with a very quick processing process to share with you guys. Why do you need to pay attention to this issue? Currently, when changing SIM to a new device, network operators (such as VinaPhone, MobiFone) will require face authentication to protect subscribers. The problem is that if you insert the SIM into devices that cannot receive SMS or make outgoing calls such as an iPad, children's smart watch, or 4G transmitter, you will not be able to receive the OTP code or follow the usual instructions. If not authenticated in time (usually within 2 hours), the SIM may be locked in one direction. In fact, each network has a different level of "harshness". As with VinaPhone, the lock notification system after 2 hours is very strict. As for MobiFone, I installed it on the children's watch and still receive calls normally, but when accessing the management application, a notification asking for authentication appears.

And you can clearly see that the necessary conditions will be as follows:

Hopefully this little tip will help you be more proactive, avoiding the SIM suddenly being locked in one direction when changing devices due to forgetting to log in to the network management account in advance.