Under certain circumstances, T-Mobile charges subscribers as much as $15,000/GB for roaming
A T-Mobile subscriber who went out of the country on vacation received a monthly bill for more than $78,000
He continued, “So I’d use my Verizon sim for like 24 hours and it’d cost me like $5 of roaming, which I was fine with. Then I go to Cambodia. I get a text from Verizon and say to myself “oh it’s that same old text about roaming, I’ll just swipe it away.” Well it turns out that text informed me that they do NOT have a partnership with the Cambodia providers, so using my Verizon sim there would cost me something like 10 DOLLARS per Mb, not 10c. I ran up $1000 in a day. Verizon was actually pretty nice about it and cut the bill in half for me. They had no obligation to do so.”
Redditor runs his roaming phone bill to £250,000/$316,000
There were many others who posted their stories about receiving an unexpectedly high monthly mobile bill for roaming. If you are planning on going overseas, check with your carrier to see what roaming charges you might face while away. Several Redditors suggested switching your phone to Airplane Mode to shut down the radios on the device when you land outside of the U.S. Once you’re able to install a SIM card from a local carrier in the country you’re visiting, you can turn your phone’s radios back on.