AX4 LAX20 purchased in US! Will it work in Europe?

[Afrims]

Purchased an AX20 via Amazon in US; I travel a lot and after reading reviews where lot of folk claimed that it works around the world, I brought it will me in EU, specifically in Montenegro. Tried two different Provider LTE SIMs with (One and Telecom-T-Mobile) to no avail. Internet light stays Red even after confirming the APN, Username and Pass from the providers mentioned above. The region is locked to ‘US Region’ and was wondering if that could be the reason!! Is there a firmware that is dedicated to EU!? Any other ideas that might help?! Thank you in advance…

[michaelkenward]

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@Afrims wrote:
The region is locked to ‘US Region’ and was wondering if that could be the reason!! Is there a firmware that is dedicated to EU!?

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Was it also locked to a US network?

Mobile operators have a habit of tying anything they sell you to their networks. It isn't just the country you can't change, you are stuck with one operator. 

I would expect anything from Amazon to be free of that constraint, unless it was one of those third party sellers.

[Afrims]

Have not tried it in US; opened the box once in EU. Did try two diff providers to no avail! Would you know if this box logs errors anywhere?! That could be helpful to see at what point its failing.