i’ve had my T-Mobile SIM for almost four months now, paying $20 a month for basically unlimited international roaming (albeit at slow data rates). i’m trying to be a good customer and stay within the fine print terms which, in a nutshell, say:
Not for extended international use; you must reside in the U.S. and primary usage must occur on our U.S. network. … As long as the majority of your usage is on T-Mobile’s U.S. network, you will experience unlimited data and text.
there is no clear-cut definition (publicized, at least) of “primary usage” that i can find. an AP article that i linked to in my first post on this subject says “customers need to spend at least half their time in the U.S. in any three-month period.” a T-Mobile rep said it’s meant for people who “use the domestic network and take occasional trips abroad.”
technically i fall into these categories? i’ve only roamed internationally for about three and a half weeks since i got the SIM card, and when i’m not traveling, it does sit in a phone that uses up data by doing app and system updates…
but i charted my usage out thanks to their detailed online statements; the bottom unlabeled bars are the total.
while i technically meet the time requirement and i fail at the “majority of usage” requirement. i guess i’m just waiting until they call me out and cancel my plan? though they also do say they will give you a warning so you can change your usage habits beforehand.
i have an international trip coming up next week, the last week of this billing cycle, and i have about 79 MB of international usage and 126 MB of domestic usage so far, which just about evens up the total tally. i already didn’t use the SIM card a couple weeks ago when i was in Lithuania, or else i think the numbers would be a lot worse. i’d love to get a SIM card when i land in Chile but as far as i can tell, there are no good data plans for prepaid SIMs? i guess i’ll have to chance it next week on the T-Mo SIM and then lay low for a while after.
luckily, i just lowered my plan to $10 a month from $20 a month! i discovered a “Change Plan” button on my Plan page of the My T-Mobile website, and they’re having a 2014 promo! so, if worse comes to worst and i can’t use the SIM abroad for a while, i’m only going to be paying 50%.