I see a lot of you posting incorrect information and wanted to clear the air. A 3G sim will not work in an lte phone. There is most definitely a difference. But an lte sim will work in a 3G phone. That's why some of you are able to swap between certain devices and others cannot. I run into this issue with customers getting loaner phones almost everyday.
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Sent from my SAMSUNG-SGH-I747 using Android Central Forums