Based on the users' reviews, here are three cons and pros of the My Numbers app: **Pros:** 1. User-friendly interface makes it easy to manage and track phone numbers. 2. Convenient for switching between different phone numbers and lines quickly. 3. Automatic updates and syncing ensure accurate information at all times. **Cons:** 1. Some users experience glitches and crashes, disrupting app functionality. 2. Limited features and customization options disappoint some reviewers. 3. No international support or ability to add non-Verizon numbers.