“Do I need any special Sim Card in my AT&T Nighthawk M1 router to use it with a different internet provider.”

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• No any microsim card would work, you would first have to unlock the hotspot.(ATT will give you an unlock code if you ask)

  Answered by Rick 7 years ago

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• Just a 4g LTE Sim Card from AT&T is all you need, I heard one from T-Mobil would also work but I have not tried that.

  Answered by aes9447 7 years ago

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