Currently I'm on a family plan with Verizon, so I can keep my unlimited data plan. However I've been in South Korea for the past 5 months and will be here for another 19 so my line with them is currently frozen/suspended. I was hoping to be able to use one of the sim cards from the local provider here, LGU+ w/out having to buy a new phone. Currently my phone does have version 4.1.2 installed on it. Also if I go into "Settings>Wireless & Networks More...>Mobile networks>Network mode" it gives me three options; Global, LTE/CDMA, GSM/UMTS. Will that allow me to use one of their sim cards?