I have the above hotspot which uses UTMS frequencies 850/1700/1900/2100. My question is, is the 2100 Band 1, or just part of the 1700/2100 Band 4? Half of the people I ask give one answer, the other half, the other. Samsung referred me to T-Mobile. When I politely asked them to give me secondary support, I was given a non-working phone number that referred me to another non-working number. I think T-Mobile just wants me to buy a new device.

My problem is I want to use the device in Japan, where T-Mobile's partners are on UTMS 1. T-Mobile's roaming page says the device does not work in Japan, but I have seen complaints that it is not always accurate, especially for dicontinued devices like mine. Has anyone used the device in Japan? Any help would be greatly appreciated. Thanks!