iPhone 6 won't text pics

[dsherman37437626]

So since we don't have home internet service and with phone wifi on it searches for wifi to send photos and finding none, it fails so we have to turn wifi off

 

[bear7962]

When you want to use Cellular to send a photo, you could try turning wifi off to test your theory. My iPhone switches back and forth seemlessly without me doing anything but testing this could give us a clue why yours doesn't.