Awaaz is a "plugin" for your Android phone that enables it to make direct phone-to-phone calls without using the cellular network if both phones have the application installed and are accessible over WiFi. It effectively makes all phone calls free, even while roaming!
There is no user signup, you never need to give any details, and you never even need to start the application (except for the first time). Awaaz runs in the background and automatically takes over any phone calls that meet its requirements. You just need to install and run it once, and you're done!
Awaaz is completely free.
- Establishes a direct P2P connection between the two phones. Capable of punching a hole through NAT, or being used on the same internal network.
- Never shares or uploads your contacts anywhere.
- Uses the Opus codec for unmatched voice clarity.
- Uses just 10 KB/s of bandwidth (upstream and downstream combined).
- Uses a hybrid cryptographic system to exchange a 256-bit AES key using 2048-bit RSA. New public and private keys are generated every single time, thus theoretically making decryption impossible.
- Uses GCM (Google Cloud Messaging) for push messages thus eliminating the need to run a service in the background.
- Has the ability to use 3G / 4G as well. Please enable the option in the preferences if you want it.
- All calls are logged in your regular call history.
HOW TO USE:
- Install and run it once. The app will register itself on the server.
- There is no Step 2! From here on, when you make an outgoing call the app will automatically check if the other person also has it installed, and if both phones are connected to WiFi. If so, Awaaz will automatically take over the call and you will see a slightly different calling screen. The same is true for incoming calls.
If you have any trouble with an ongoing call, hit the "X" button on the bottom-left to terminate the app and make a regular call.
I am highly dependent on feedback from users like you! Please share your opinion here, and if you have any suggestions or complaints just let me know. Also, do mention which phones are at both ends of the conversation, since a lot of issues are handset specific.
Some HTC devices have exhibited poor voice quality. I'm still diagnosing that issue.