I am going to order a Verizon iphone 5S, and wondering if LTE works with local sims in Asia, especially in South Korea. I checked on apple website, looks like LTE 5, 38, 39, 40 are not listed for US Verizon version. A specific carrier does not use all LTE bands, so it is confusing.. Anyone had a success using an asian local sims with your US iphone? Thank you!