The service of missing letter reminder has been opened, but I haven't received SMS reminder recently. Why?

The missed message reminder service cannot receive SMS reminders for the following reasons:

1. Whether the call reminder function has been successfully opened;

2. If the phone is turned off or there is no information number for more than 48 hours, you will not receive the SMS;

3. Set the call forwarding function to other numbers or cancel the call forwarding function;

4. Whether the mobile phone is equipped with Unicom's letter shielding function. If it has been blocked, it needs to be restored before it can be used;

5. Check whether the SMS interception function is set in the mobile phone security software. It is recommended to turn it off and see if you can receive it.

If it still doesn't work properly, it is recommended to call the local customer service phone for handling.