Joke Collection Website - Blessing messages - 9300 can't receive the text message and can't send it out. What happened?

9300 can't receive the text message and can't send it out. What happened?

1. Call to see if there is any arrears.

2. Enter the symbol *#*#4636#*#* on the dial, and enter mobile phone information to update S or something.

3. Restore the factory settings.

4. Brush the machine to solve the problem. An Zhi. Com has a tutorial. My classmate S3 brushes miui, which is very good.