From everything I've read, T-Mobile throttles international data at 128 kbps? If untrue, then yeah it's probably still best for international purposes. Either way I'm just happy I don't need to be on airplane mode anymore. Long overdue. Hopefully another year or so and everyone can just keep their phones on and not worry about anything.
Much confusion about the 128kb throttling for international, you will get 2G/3G, 128kbs-3mps, it depends on where you are in 120+ countries.
In Mexico and Canada you will get 4G if the area is using 4G. Penasco has 4G.
If you are on the T-Mobiles, new Simple Choice plan, you get the North America connect package included with high speed 4G in Mexico and Canada.
I have an older Simple Choice family plan, so I had to add the North America connect package with tethering for an additional $10 per month total for all my 8 lines.
Before I added the $10 option, I was only getting 3G at about 1-3mps in Mexico (it was ok for most things) and 3G/4G in Canada.
I have done speed tests in Cholla and now get 10-25mps of 4G/LTE, some other places RP only 3G, it varies where I was.
With all the pressure T-Mobile/Sprint are putting on Verizon that $2 per day fee they charge will disappear.
Because in 2-3 years most of the world will have affordable roaming agreements between carriers which is great news for us customers.
All the carriers are changing their plans monthly it seems, so pay attention to the details when you start with a new plan.