Joke Collection Website - Blessing messages - South Korea's SKY mobile phone A690S can receive short messages, but can't send them. What should we do?

South Korea's SKY mobile phone A690S can receive short messages, but can't send them. What should we do?

Hello:

The possible reasons are as follows:

It's your phone settings or the phone itself. It's safer to go to a mobile phone shop and have a professional to help you deal with it.

It's a problem with the operator's signal network, so it's recommended to deal with it directly in the service hall.

I hope my answer is helpful to you. Good luck!