My mobile phone is Xiaomi 2. I can receive text messages normally, but I can't send them out. What happened? I can send and receive normally by changing my card and my mobile phone.

1, check whether the mobile phone is in arrears.

2. Whether the number of the SMS center is correct. (The number of China Mobile SMS Center is: +86 13800XYZ500, where XYZ is the area code part of your number, and add 0 at the end of less than three digits. Such as: Nanjing area code

025, XYZ corresponds to 250; Shenzhen area code 0755, XYZ corresponds to 755. )

3. Pull out the mobile phone card and put it on other mobile phones to see if it can be sent.

If the above cannot be solved, it is recommended to contact local customer service to find out the reason ~