What's the matter with receiving SMS of apple id verification code for several days in a row?

First enter the wrong Apple ID account or password, check and log in again.

Second, there is an error in the mobile phone network connection. Replace the connected network or turn off and restart the phone, and then log in to the Apple ID.

Third, restore the network of the mobile phone before logging in to the Apple ID. Take the iPhone 6s mobile phone as an example. The specific method is as follows:

1. Open "Settings" on the phone desktop to enter.

2. After entering, find the "General" item and click Enter. ?

3. Then select the "Restore" option. ?

4. After entering, just open "Restore Network Settings".