If you are interested in VoIP softphone app with video support that will work on Android smartphones and devices, you will find it useful to try our demo version:
https://play.google.com/store/apps/details?id=org.abtollc.videosoftphone
The demo video sip softphone app has 1 minute call limitation. You can use VoIP SIP SDK for Android in order to make your own sip softphone app without any limitations.
If you are interested in custom video sip softphone, please download our SDK for Android or contact us to request a price quote.