I suspect no one wants to hear this but OP’s issue is exactly why I just can’t get by with the current popular size phones, regardless of which pocket used, they’re just too dang big and unwieldy. I tried a 14 for about 1 week and it protruded and fell from my pockets… I honestly cannot fathom how many/most people manage to keep their 14 and 14 plus size phones in their pockets.
Anyway, to OP’s question, no I almost never sit on the phone. Seems very unwise. Side pockets only, and other posters’ good strategies also when possible.
Semi on topic, I miss my one pair of Jnco Jeans. Found this on ebay, might have to get it one of these days, haha:
could fit two phones in each those back pockets! Only $151… lol