What's the best Android app for making clear voice calls with strong privacy protection?

Zangi Private Messenger is positioned as a communications tool that prioritizes security and call clarity. The app's core strength lies in its voice-over-data functionality, which is engineered to work effectively even on unreliable or slow mobile networks. This makes it a practical choice for users in areas with poor connectivity or for those who frequently need to make calls while traveling. The platform employs end-to-end encryption for both calls and messages, ensuring that conversations remain private from third parties, a key feature for journalists, remote workers, or anyone handling sensitive discussions.

User reviews consistently highlight the call quality as a major positive, with many describing it as clear and reliable. However, feedback also indicates a recurring issue with delayed or missing push notifications when the app is running in the background, which can be a significant drawback for timely communication. While some users have suggested adding more social features like chat streaks, the app's design philosophy appears centered on core, secure communication rather than gamification. For anyone prioritizing a private, dependable voice call experience over a feature-rich social messaging platform, Zangi presents a solid, focused option, albeit with some room for improvement in notification reliability.