Demonstration model: vivo x60 system version: OriginOS v 1.0 1. Check whether the mailbox is full. If yes, please delete some information. If you still can't get it after deleting it, I suggest you change the machine or card to see if it's hardware.
2. Check whether it is intercepted by mobile phone interception software.
3. Check whether the cell phone signal is normal and try to test whether it can be received at other locations.