If you need it, here is the relevant paragraph from the Tmobile contract to read:
Changes to the Agreement or Charges. EXCEPT TO THE EXTENT PROHIBITED BY LAW, IF WE: (A) INCREASE THE CHARGES INCLUDED IN YOUR MONTHLY RECURRING ACCESS RATE PLAN, OR (B) MODIFY A MATERIAL TERM OF OUR AGREEMENT WITH YOU AND THE MODIFICATION WOULD BE MATERIALLY ADVERSE TO YOU, WE WILL NOTIFY YOU OF THE INCREASE OR MODIFICATION AND YOU CAN CANCEL THAT SERVICE WITHOUT PAYING A CANCELLATION FEE (WHICH IS YOUR ONLY REMEDY) BY FOLLOWING THE CANCELLATION INSTRUCTIONS IN THE NOTICE. IF YOU DO NOT CANCEL YOUR SERVICE BY FOLLOWING THOSE INSTRUCTIONS, OR YOU OTHERWISE ACCEPT THE CHANGE, THEN YOU AGREE TO THE INCREASE OR MODIFICATION, EVEN IF YOU PAID FOR SERVICE IN ADVANCE. IF THE NOTICE DOES NOT SAY HOW LONG YOU HAVE TO CANCEL, THEN IT IS WITHIN 14 DAYS AFTER THE DATE OF THE NOTICE, UNLESS A LONGER PERIOD IS REQUIRED BY LAW. EXCEPT TO THE EXTENT PROHIBITED BY LAW, CHARGES FOR PRODUCTS, SERVICES, OPTIONAL SERVICES, OR ANY OTHER CHARGES THAT ARE NOT INCLUDED IN YOUR MONTHLY RECURRING ACCESS RATE PLAN (SUCH AS DIRECTORY ASSISTANCE, ROAMING, DOWNLOADS, AND THIRD-PARTY CONTENT) ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND IF YOU CONTINUE TO USE THOSE SERVICES, OR YOU OTHERWISE AGREE TO THE CHANGES, THEN YOU AGREE TO THE NEW CHARGES. VISIT OUR WEB SITE, RETAIL LOCATIONS, OR CALL CUSTOMER CARE FOR CURRENT CHARGES.
