For world travelers with a need for LTE speed, Samsung's newest version of the Galaxy S4 might be the answer to your jet-setting prayers. When they arrive, the updated Galaxy S4 and S4 Mini will be the world's first handsets to automatically switch between the two different types of LTE networks used worldwide. While FDD-LTE is the standard in most of the world, TDD-LTE is becoming more popular in countries around the world.
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