Unicom users, mobile phones are down. How to receive short messages from others during the downtime when paying again requires some effective methods.

Unicom's SMS server only saves messages for 48 hours if it doesn't receive them. If it doesn't receive a message within 48 hours, it will be deleted, so it can't send a message during the reception. That is to say, if you stop at 1, stop at No.2 and No.3, and recharge your mobile phone on No.4, you won't receive the message sent by 1, but you can still receive the message on No.2 and No.3.. Messages that exceed the time limit will be deleted and cannot be received.