V-Line for Android
Works anywhere there's wi-fi or 3G, now have two lines on my mobile one for business...one for mates.
The app will not work so I am switching to the soft-phone version to see if it works.
Doesn't even work
Great for use abroad as when connected to wifi all inbound calls are free of charge and caller pays UK landline rate. No hefty phone bill
The app was highly aggressive, overriding other processes even when no call was incoming. Also, when the app received an incoming call it wouldn't unlock the screen, so I had to enter code just to see the screen to answer.
by Y####:
A few really irritating niggles - when it has disconnected in the background and then reconnects, it maximises the app, which is really annoying when you are in the middle of something else. Also, it eats the battery :( Call quality so far hasn't been that good, but time will tell.