Most places won't let you have your phone anywhere near the table. Awesome technology, just not built I think for Vegas.
But they don't care if your phone is on the table.
I think this is more to keep the game moving than any concern about cheating.
This isn't about the house-run, house-edged table games you find in the middle of casinos; it's about Texas Hold 'em poker rooms. Most poker rooms I've been to let me keep my phone on the table next to my cards. I doubt that'll be the case now.