Based on the users' reviews of the T-Mobile Carrier Hub app, here are three cons and pros in English, limited to 15 words each: **Cons:** 1. "App kept crashing and freezing, frustrating experience." - User frustration with app stability. 2. "Customer service not responsive through app, inconvenient." - Users unhappy with app-based support. 3. "Too many in-app notifications, overwhelming and annoying." - Excessive notifications annoy users. **Pros:** 1. "Easy to manage accounts and check usage." - Users find app user-friendly for account management. 2. "Convenient to pay bills and track usage." - Users appreciate the app's bill payment and tracking features. 3. "Good customer support when accessed manually." - Some users have positive experiences with app-based support.