Samsung Galaxy Watch Ultra
I can't send and receive text messages
Solution 4 of 4: Flight mode is turned on
You can turn off all wireless connections so your smartwatch can’t cause any interference with sensitive equipment in a plane or a hospital. You can use many smartwatch functions when flight mode is turned on, but you can't receive calls or messages.
Slide your finger downwards starting from the top of the screen.
Press the flight mode icon to turn the function on or off.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.