1. It's not working! (outgoing or incoming calls are not getting routed over Awaaz)
There are multiple possibilities here. First and foremost, both phones must have the app installed. Second, both phones must be connected to WiFi, or 3G / 4G (if that has been enabled in the preferences). Also, check your phone number as mentioned in point 6 below.
2. I see a message "Callee is not on Awaaz", and then "Bypassing Awaaz".
This means that the person you are calling has Awaaz installed, but is currently not available on WiFi. Hence the app makes a regular outgoing call.
3. Voice is unclear.
Awaaz uses Opus, which is probably one of the best audio codecs currently available. Despite this, some phones may have issues with audio capturing. If this happens with you, please write an email to awaaz-feedback[at]jainanuj.com, and mention what phone is at the other end of the conversation (the one that is sending the unclear audio).
4. There is a persistent echo.
I am currently working on a AEC (acoustic echo canceler). Meanwhile, if you hear an echo it will help if the person at the other end of the conversation reduces the earpiece volume on their phone.
5. More info on the encryption?
Privacy is, and should be sacrosanct. Hence Awaaz deploys some very advanced encryption which should be unbreakable, unless some of the really wild conspiracy theories about the NSA are true! This does not create a very heavy burden on the CPU, but you can switch it off nevertheless if you so wish, either permanently through the app preferences, or through the encryption button while you are in a call. If you're really paranoid about eavesdropping, you should vocally confirm with the person you're speaking with that the app has displayed the same encryption hash on your screens.
It should be mentioned that by using Awaaz you won't be able to hide who you are talking to. Since it establishes a P2P connection, any agency sufficiently motivated can find out where the connection is terminating. Some metadata could also be gathered, like how long a conversation lasts. However, the encryption will ensure that what you said remains secret.
6. How do I change my phone number?
A common problem is that Awaaz picks up a wrong phone number. This can prevent it from working correctly. First, to check if it has the right number, open up the app preferences, scroll down to where it shows your phone number and see if it is correct. The phone number should be your complete number including the country code. For example, if you're in India and your number is 9810012345, then it should say 919810012345.
If the number shown is incorrect, please tap on it and a window will open up from where you can change it.
Since the architecture of Awaaz has been made with privacy in mind, it stores the absolute minimum data required. This basically means your phone number (for receiving calls), phone model (for debugging purposes) and your last IP address (of which no history is maintained). Nothing else is ever stored, including any and all information on calls made. From version 3, Awaaz "synchronizes" your contacts with its server, but this does not mean that your contacts are uploaded - instead, an MD5 hash of telephone numbers is stored. This means that we are unable to see any phone number of yours, but if somebody calls you on Awaaz we can hash their phone number to match to your contacts.