Originally Posted by
zondaracer
TMobile overseas (outside of Canada or Mexico) is reduced to EDGE speeds. It’s pretty slow but for an extra $10 per month, they upgrade it to TMobile One Plus and they double your speed. They also extend the free WiFi on Gogo to the whole flight. Data passes can be purchased overseas to increase speeds to LTE temporarily.
Old info...was two years ago..have had FI for several years..it's changed lots...
Haven't seen the "upgrade" screen for a long time...just the "welcome to xxx".
Is now full speed...and multiple networks...and not always T-Mobile affiliated networks anymore.
Not perfect, but with data the same $$ anyway, if you are a light data user, and are ok with the limited phones on Google-fi, namely the Pixel series (regular, XL, 2 and 2) and the Moto X4, it's a great choice internationally.
Tip...
Use the hangot dialer when international to use data, not minutes for calls, so ZERO per minute call charges, only data.