A:AnswerI finally mastered it and yes, both have to be depressed together. I had a terrible time initially getting it to turn off but that's how you do it.
A:AnswerWhen you purchase the device choose the activate later option. That's what I do. Once you buy the device simply insert your sim card and you should be good to go
A:AnswerIt works in Colombia. With Tigo. As long as it's unlocked or you have roaming you shouldn't have a issue. Unless you're provider doesn't have access to any antennas over there
A:AnswerYou can do the device change your self in the metro app, or you can take it to them but they will charge you $21, if you do it yourself is simple steps, you can do it on my metro app.
A:AnswerThis is what I found when I goggled "Band 71".
This frequency range travels twice as far and works four times better in buildings than conventional LTE bands. Band 71 also provides better coverage in remote areas and in homes.
A:AnswerThis is an educated guess. Hopefully, someone with deeper knowledge will clarify and correct if necessary.
Since the phone DOES NOT support band 71 (I am assuming you are referring to 5G band n71), then it WILL "be handicapped from using the 5G band 71 on T-Mobile". In other words. the phone will not be able to use band n71 (since the phone simply does not support it.)
By the way, I am trying to decide to either buy a cheaper A53 that does not support n71 or to go ahead and spend an extra $150 on a T-Mobile phone that supports n71. Is that extra performance worth an extra $150?