I quite like the design philosophy behind the Punkt phones. It looks like the MP01 is 2G only which would disqualify it for U.S. use. For the MP02 they say

> "Please note that some mobile phone service providers in the USA have not yet finished registering the MP02 for their networks.Because of this, some carriers currently require users to temporarily disable VoLTE on the MP02 (use 4G or 3G calling instead), and Verizon's network is currently unable to accept the MP02 at all. (This is an admin issue, not a technology issue.)"

Anyone who has actually used this device in the U.S. who can share experience? It sounds like you would still be able to use it as an LTE hotspot, but for voice you'd fall back to 4/3G.