Why did sending SMS fail?

The reasons for the failure of SMS sending are: arrears of mobile phone, wrong setting, wrong mode, software shielding and SMS business problems.

1, because the sim card of the mobile phone is in arrears, it is the most common situation that the SMS cannot be sent out.

2. The mobile phone information center number is set incorrectly, which is inconsistent with the actual information center number in the province.

3. Wrong mobile phone mode selection.

4. It may be the shielding caused by mobile phone antivirus software.

The short message service has been cancelled, you can go to the business hall to re-order this service.

First, you can't send text messages but you can receive them.

1. If it is a new network transfer service, it is recommended to wait for the operator to open the SMS function before trying.

2. This situation may be related to the setting of the number of the information center. It is recommended to contact the operator to confirm whether the information center number of the mobile phone is correct. If it is not correct, you need to correct it in the SMS settings, and try to restart or switch the flight mode to search the network again to see if it can return to normal.

3. If the short message contains special characters or some illegal content, it may be intercepted by the server after sending the short message. It is recommended to check whether there is such a situation.

Second, you can't send and receive text messages.

1, some places use exception: if your early place is an area with poor signal coverage/densely populated area. Affected by the environment, there may be poor signal or network congestion, which makes it impossible to send short messages. I suggest you try to leave this area for a distance, then restart your mobile phone or switch flight modes to see if you can solve the problem.

2. It is everywhere: you can change the machine and card for comparison test. If it is determined that it is a card problem, it is recommended that you contact the operator for handling; If there is something wrong with the mobile phone, it is recommended that you take the purchase invoice, warranty card and mobile phone to the nearest customer service center for professional engineers to detect and handle it.

The meaning of short messages:

Short message is a telecommunication service in digital mobile communication system. It is a non-real-time and non-voice data communication service to transmit text or digital short messages through the signaling channel and signaling network of mobile communication system.

SMS can be initiated by mobile communication terminals (mobile phones), SMS platform servers of mobile network operators, and network service providers (including ICP and ISP). ) interconnected with the SMS platform of mobile operators.

Although sending and receiving point-to-point messages through mobile terminals occupy the mainstream position in the technical means to realize the short message service function, fixed telephones, PHS and the Internet are becoming new tools and carriers.

Baidu Encyclopedia-SMS