We recently covered the rumor that T-Mobile US were preparing an updated version of their official app and now Reddit user, dsulli37, has posted several screenshots of the new application running on an Android device. It's looking much better than the old version, with a new design layout that is closer to Material Design. The new application features the ability to check current usage and bill status, change the plan, pay your bill or Equipment Installation Plan. There's also the option to locate a local T-Mobile US store together with T-Mobile's "device health" functionality; more on this later. Currently, the application is a leaked version and as such, should be considered completely unofficial and Android Headlines cannot vouch for the authenticity of the APK that is available from the source for sideloading. We don't know what additional features might be supported on the device, such as fingerprint sensors or Apple's TouchID for the iPhone version.
Writing of the status of the application, we do not yet know when T-Mobile US are planning on officially releasing the application for either the Android or iOS platforms. Currently, some users have experienced difficulties with the application when sideloading it: it will report that it is not ready for their type of account, and on some devices it is reportedly running very slowly. Some of the functionality is broken or incomplete, and some T-Mobile stores are missing from the database. One of the information screens shows a "3" rather than account or usage content. It's possible that the information the application presents is incorrect, so until T-Mobile US officially release the updated application, we would recommend caution on relying on the data.
T-Mobile US have continued with including the "Device Health" options and settings in the device, which for many customers is the reason why they do not use the application. The idea behind the Device Health checks is that it can help T-Mobile's customer support agents assist users when their device is not performing as they expect, but unfortunately the older version of the application has a reputation for being a battery hog, despite being designed to help customers save battery. It remains to be seen if T-Mobile US have improved how this aspect of the application works, or if instead the developer has included an easy way to the Device Health functionality.