On a Republic flight, was in the middle of finishing a text to someone when the door closed for pushback. Almost immediately, the woman in the window seat next to me said "please put your phone in airplane mode". I was a little taken back and looked at her for a moment and told her I was almost finished. She then said "I'm an FA and this is against FCC and FAA regulations. I'm advising you this for my own safety". She also went into the argument about interference with aircraft systems.

Ok, we were not even yet pushing back. And yes, I know when the door closes the announcement comes on to put mobile devices in airplane mode and put away "large" laptops. I also know that "reasonable" time to comply with those instructions is given. She didn't waste a second to tell me this the moment the door was closed.

Her stickler attitude was what shocked me more than anything. I replied to her that I would have been done already if she hadn't interrupted me, and no - it's not an FCC regulation to not use a phone on the ground. She then looked over to the passenger on the other side of the aisle who was on his phone. She raised her voice to him as well "Airplane mode please. I don't see the airplane icon on your screen". On his screen was his music library and he had headphones on. She was in the "D" window seat of an E175 and saying this to the person in the "B" aisle seat across from me. I don't see how she could make out if he had his phone in airplane mode or not, but whatever.

Rather than engage further with her, I finished my text and put my phone away. We didn't speak the rest of the flight.