"The offer kicks off starting on Tuesday, July 19 as of part of T-Mobile’s existing Tuesday free rewards promotion. The free Pokemon data will be an offer in the special rewards app for the next few weeks. Customers who claim it will be able to play Pokemon Go without having the game’s data usage count against their monthly allowance through the end of August 2017.T-Mobile Giving Pokemon Go Players a Year of Free Data - Fortune
Legere had earlier tweeted that the number of active Pokemon players on T-Mobile’s network had doubled in less than a week and their data usage had quadrupled."
Friday, July 15, 2016
T-Mobile Giving Pokemon Go Players a Year of Free Data - Fortune
Also see T-Mobile is giving away free 'Pokémon Go' data for a year (Engadget), which notes "The Un-carrier is keeping an eye on this massive global phenomenon, and wants to help you get out there and be the very best like no one ever was. Along with your year of free Pokémon data, you can also claim a free Frosty, a free Lyft ride up to $15 and 50% off of certain accessories via T-Mobile, such as battery packs so you can keep the game going long after your battery has succumbed to incessant GPS usage."