Text messages sent by mobile phones sometimes show that they have been sent, but the other party has not received them? Thank you for your questions.

The short message report on the mobile phone only tells you whether the short message has arrived at the short message center and whether it has been sent to the other party's mobile phone is unknown, so this thing is sometimes not allowed. For mobile SMS receipt service, you can receive the receipt whether it is sent to the other party's mobile phone or not. This is very accurate, but it can only take effect in mobile networks.