My mobile phone cannot send text messages. When sending text messages, it says that the number does not match, but it can receive text messages and make calls.

Use the elimination method directly, 1. Format the phone, Nokia phone *#7370# and other phones, select the skin care factory settings in the settings to see if it works 2. Change to someone else's card and see if it can work. Card problem, 3. Try changing your card to someone else's phone to find out the problem. If it's a phone problem, you can format the phone. If it still doesn't work, just flash the phone. If there's a card problem, I'm sorry and I can't replace the card.