Law requires 25Mbps home Internet. T-Mobile lowers speed to 600Kbps after 50GB cap. Text settings Story text Size Small Standard Large Width * Standard Wide Links Standard Orange * Subscribers only Learn more Minimize to nav T-Mobile violated a New York state law by imposing a 50GB-per-month data cap and reducing speeds to less than a megabit per second on home Internet plans it is required to offer people with low incomes.