My iphone can receive text messages and make phone calls, but when sending text messages, it is stuck there 90% of the time. Later, I will say that sending failed. What's going on here?

I have met them several times. The general reasons are as follows:

1. receiver problem. For example, I am Anhui's mobile phone number, and I always fail to send short messages to radio programs in Nanjing.

2. Signal problem, sometimes the signal is not good, such as in the subway.

3. The receiver's mobile phone is set to "reply the same message", which I used with Nokia before. Sometimes people can't reply to text messages even if they are set up like this, so they can only write new messages and send them to them.

If it is for other reasons, I don't know. You ask the customer service to try it. If it doesn't work, let him change your mobile phone. The premise is that the customer service has problems and the customer service will try another card for you. If there is still a problem, it will change your mobile phone.

I hope it helps you.