The main thing I use my phone for during the game is to get insight on questionable plays and check scores/stats. One example being the series where UK got a favorable PI call and the fumble/shovel pass into the endzone for a TD. We got one replay in the stadium from one angle. It's nice to see what the conversation is outside of the stadium in those cases.
Also the ribbon board on the East side went dark near the end of the 2nd quarter, which usually rolls scores and stats. I pulled up ESPN in the 2nd half to keep track of the game stats