It's been more frequent as of late. Seems even more often to be when I'm looking at the datacrons or opposing teams character stats from the squad setup screen.
However, I've had it lockup from every change in screen in the game. Battles, stores, Challenges, maps, etc. Not sure what this is about but by my tally I've lost 6 rounds of GAC, 2 full refreshes worth of Conquest energy, 12 waves in Geo TB, 4 Battles in TW and that's just my account since the title update. We shorted a star in TB because of how many people are freezing and that's not just Samsung, Apple phones too.
I've talked to more people that aren't reporting than you might believe, so this is a serious issue. Losing GL tokens must be infuriating.
Last lockup I restarted my app just before clicking the battle and it still froze. I've been restarting before every block of Battles I do. I try not to switch between apps before beginning battles.
@EA_Gunner have you been able to replicate it yet?