With Pindo you can connect to any SIP provider without using your data channel or the SIP protocol. Just surf to www.pindo.me enter your SIP credentials and scan the generated QR code to configure Pindo to work with your voip service provider.
Pindo is not a voip application nevertheless it requires some very limited data access like GRPS or EDGE in order to launch a call and synchronize the routing with the call server. Pindo places a normal mobile call to a fixed line number attached to the Pindo cloud servers. Once the call arrives in our cloud we connect you to your SIP service provider.
NOTE TO LOCATION SHARING IN THE BACKGROUND:
Pindo offers the feature to share your location. This requires continued use of GPS. Continued use of GPS running in the background can dramatically decrease battery life. This feature is not available for most SIP providers.