IPhone 6 sends text messages, but some can't receive them. What happened?

Mobile phone is full: many short messages are saved in the mobile phone card by default, and the storage capacity of the mobile phone card is small, so it is generally easy to be full. At this time, you need to delete some short messages or other things that occupy memory.

SMS center number setting: you can't receive the SMS, or there may be a problem with the SMS center number setting. For this problem, you can set the number of SMS center correctly in the mobile phone information settings, and then confirm it to solve the problem.

Poor signal in wrong place: In tunnels, tunnels, deep mountains and sparsely populated places, the signal is generally poor, and the mobile phone cannot receive short messages. Or other places, but the instrument with signal shielding shields the cell phone signal, so it is temporarily unable to receive information. Just change your location and go to a place with a good signal, and you will naturally receive the information you didn't receive.

Blacklist and information interception: some junk information often bothers users, and users have to blacklist, but sometimes they don't pay attention to it. Some settings in the setting options are not completely changed according to their own wishes, which leads to information interception, so blacklist interception needs to be removed.

It may be caused by minor problems on the operator's server, network delay and so on.

It may be that the mobile phone is in arrears and can't receive the information.