How is it that the mobile phone number can't always receive the short message sent by Unicom number?

Hello! Excuse me, can you receive the SMS sent to you by mobile and telecom numbers? Is it impossible to receive short messages from one Unicom number or multiple Unicom numbers? You send a message to the other party, can the other party receive it? If not, it may be that the SMS center number in your mobile phone is wrong. I suggest you consult mobile customer service or go to the mobile business hall to ask for the SMS center number. It is also suggested that you can exchange mobile phone tests with friends and family, put your mobile phone card on someone else's mobile phone, and then put someone else's mobile phone card on your own mobile phone to test whether it is normal. If not, it may be a problem with the mobile phone terminal. It is recommended to test the mobile phone.