What is the reason why Apple's mobile phone can't send text messages?

No signal or poor signal, you can go to a place with strong signal to test.

The SMS sending function has been turned off for this mobile phone number. You can turn on the SMS function and try again. The number balance is insufficient. Please check the balance or recharge the payment and try again.

Check the network connection. To send information in the form of iMessage message or MMS, you need to use cellular data or? Wireless network connection. To send text messages, you need to use a mobile phone network connection. If you open it? Wi-Fi call function, you can send short messages through Wi-Fi. Please check with the operator whether the type of information you are trying to send (such as MMS or SMS) is supported.

Extended data:

Matters needing attention in sending SMS by mobile phone:

The sending time of SMS should be based on the premise of not affecting users and not easily disturbing customers, and pay attention to frequency and time. When customers are busy at work, or when they are sleeping and resting, it is not appropriate to send text messages at will.

Pre-test before sending Pre-test before sending Pre-test before sending Pre-test before sending Pre-test before sending. It is suggested to put in about ten numbers to test whether there are sensitive words that are blocked in the content. If they are all received, they can be sent normally. If there are no sensitive words, they need to be modified. Sensitive words need to be replaced with other words or added with spaces.

Apple Support-If you don't have access to iPhone, iPad or