T-Mobile has done a lot over the years to back-up its claim of being an "Un-carrier," offering perks and options that big rivals Verizon and AT&T don't come close to. Unfortunately the company has announced it's bringing an end to one of its more attractive perks: free unlimited LTE service for customers traveling in Canada and Mexico.

Starting on November 12th, T-Mobile's Mobile Without Borders plan will be getting a 5GB data cap on LTE speeds when users visit the US's neighbors to the north and south. Once the 5GB limit is used, customers will still get unlimited data, but it will be throttled to "Simple Global speeds," which is about 128Kbps.

"Mobile Without Borders is an incredible benefit and allows customers to stay connected when traveling in Canada and Mexico. In order to prevent usage beyond the intent of the product, we implemented a limit on the amount of monthly 4G LTE data," T-Mobile says. The carrier adds that less that less than 1% of users with this plan use over 5GB of data when traveling to Canada and Mexico.

More than likely this change won't affect those users making short trips across the border, while at the same time encouraging those few who do go over 5GB to make more of an effort to use hotel WiFi. T-Mobile One customers that don't want to take a chance with the data cap can get unlimited high-speed international LTE for an extra $25 per month.