What should I do if the IPhone6 SMS card is dead?

When the SMS of iPhone6 got stuck, we turned on "Settings" on the phone.

Open the access settings, we find the airplane mode item, and click Open it.

When the flight mode is on, we will click Close.

After closing time, we entered the short message and tried to send a short message to see if the card machine was back.

If the card is returned, or it can't be sent, we will go back and see if there is a signal on it.

In addition, we can turn off our iPhone6 and then restart it.

If all the above methods fail, then we should consider after-sales.