Based on the user reviews on the App Store, here are three cons and pros for the Hangouts app: **Pros:** 1. "Seamless integration with Google services, easy to use and set up." 2. "Video calls always clear, low battery consumption, and stable connection." 3. "Large user base, many friends and family use it, very convenient." **Cons:** 1. "Frequent crashes and disconnects during calls, disappointing experience." 2. "Too many notifications, spam messages, and irrelevant updates, annoying." 3. "Limited customization options, inconvenient chat management, and layout issues."