T-Mobile now requires 60% of in-store transactions to go through its T-Life app, removing most traditional customer service interactions.Customers are auto-checked in via the app, and reps can no longer walk them through the process using the old tablet method.However, there is a simple trick to bypass this new policy by using the classic tablet-based customer experience for cash transactions.T-Mobile is now requiring both its corporate and third-party retail locations to reach 60% usage for the T-Life app.