My Verizon Galaxy S5 will not recognize a Japanese prepaid sim card, even though I've configured a new APN (tried several groups of settings). I've seen posts elsewhere from last year that say Verizon will not allow this sim to work. Is this still true, am I basically out $50 and without access other than wireless? It's supposed to be unlocked, so i don't think that's the problem. I'm not about to pay VZN's prices for international usage. Any feedback is appreciated.