What should I do if the card application machine cannot receive text messages?

The reasons why the mobile phone cannot receive text messages are as follows:

1. Signal problem: If the signal at the location of the mobile phone is unstable or weak, text messages may not be received normally.

2. Operator setting issues: Mobile phone operators may filter or restrict text messages, resulting in the inability to receive text messages normally.

3. SMS setting problem: If the SMS setting of the mobile phone is incorrect, it may cause the SMS not to be received normally.

4. Card sticker problem: The card sticker is a special tool used to unlock the phone. If there is a problem or damage to the card sticker, text messages may not be received normally.