I want to transfer to Unicom, so what are the disadvantages after the transfer? For example, what if the bank card information Taobao verification code is not received?

When the number is transferred to the network, as long as it is successfully transferred to the other party's network, the message of Taobao verification code will not be missed if the signal is normal, as long as the sender successfully sends the message. The disadvantage of moving to Unicom is that the network signal is poor, and there is no signal in many places, so it is possible to receive text messages.