Anyone know which countries the US unlocked version of the iPhone 5S works in Asia. In Hong Kong from what I saw is that the 4G LTE runs off of 1800/2600 Band. Will the supposed T-Mobile unlocked version run in Thailand and Hong Kong? What if 5S only has one of the two 4G LTE bands in it? For this that travel between California and Asia it would be nice to have one iPhone 5S that picks 4G LTE in both Asia and California. Mainly Hong Kong,Thailand,and Japan.