What Is AppSelector?
AppSelector is an app that comes preinstalled on new T-Mobile phones.
How Does AppSelector Work?

AppSelector installs automatically toward the end of the initial setup process of some T-Mobile devices.
Based on phone usage and a questionnaire, it will suggest apps that you may find helpful.
You then have the opportunity to install any of the recommended apps.

The only way to avoid AppSelector is to uninstall it from your gear.
Is AppSelector Safe to Uninstall?
Some users find AppSelector useful, but it isnt necessary and is safe to uninstall.
Heres how to uninstall AppSelector:
OpenSettingson your T-Mobile unit.
SelectAppsorApps & notification parameters.