A diagnostic app by Digital Care Allows T-Mobile Clients to sell their devices in T-Mobile retail stores. Within process performed by T-Mobile ODDAJESZ, DOSTAJESZ. T-Mobile clients will receive a discount for new devices from T-Mobile. A simple and easy to use tool to receive a real time estimate on the value of your device. The app automatically recognizes make and model of the device, provides a guided process to test all of the main features (Bluetooth, Wi-Fi, LCD, Touchscreen, Speakers, etc.) and offers you the best value for your phone which you can choose to accept or reject. A quick reverification in the T-Mobile stores is performed to complete the trade-in before issuing a voucher that can be redeemed at T-Mobile stores only.”