My mobile phone in nokia X7 can receive short messages, but I can't send them. If the card is installed on another mobile phone, it can be sent. Why? urgent ...

This is a problem with the mobile phone.

I have been there before.

You copy all the important things in your mobile phone.

What about the lattice machine

Just grid yourself at home.

After my grid machine

You can send text messages as usual again. If you want to know what caused it,

I had to go to the mobile phone professional repair point for consultation.