Purchasing outright today, from a retail Apple store. The band 30 available on ATT phones is intriguing. Will infact an ATT phone purchased outright at an Apple retail store work with Verizon? Cliff Notes: - I'm a Verizon customer - Buying a 6s outright - Purchasing ATT phone from an Apple retail store - Would like to use ATT phone on Verizon Does band 30 even make a difference, and if so how and where would I notice it? Is it supported on Verizon network?