Amazon usually uses AT&T, if the Kindle is anything to rely upon. They don't use AT&T branded SIM cards, but make their own with a Ki key only they know and assume remains consistent for the life of that device since the SIM is not designed to be user-replaceable, like a smartphone or other tablets which makes it user accessible.
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Amazon usually uses AT&T, if the Kindle is anything to rely upon. They don't use AT&T branded SIM cards, but make their own with a Ki key only they know and assume remains consistent for the life of that device since the SIM is not designed to be user-replaceable. This is not like a smartphone or other brand of tablet which makes it user accessible.
Amazon usually uses AT&T, if the Kindle is anything to rely upon. They don't use AT&T branded SIM cards, but make their own with a Ki key only they know and assume remains consistent for the life of that device since the SIM is not designed to be user-replaceable, like a smartphone or other tablets which makes it user accessible.