This age of portable devices is pretty great for large predators. This fox would've otherwise NOT been too distracted to take notice of some very heavy footsteps, muffled sloshy cries for help from earlier snackables, and-MOST importantly-the enormous mouth taking a deep breath as it stretches wide enough to engulf most of his upper torso. It's likely he would have thought "Oh, I should probably run away from this", but he was doing the twitters instead.
At least if he doesn't drop it he can call for help? \Ô~ô7 Someone will rescue a sticky coughed up phone at least.