When you are not on a call, the app uses a minimal amount of data to listen for incoming calls.
Low Bandwidth Codec - Enabled
When you are connected on a call, Fongo uses 0.5 MB per minute.
Low Bandwidth Codec - Disabled
When you are connected on a call, Fongo uses 1 MB per minute.
You can expect 1MB of data to equal thousands of sent or received messages for both Fongo messaging or text messaging (SMS).
Messages containing media (pictures) use more data than plain text messages, ranging from 0.5MB to 5MB per message.