Available to download for free from Google Play, Libon will now offer Android users free calls, smart messaging and personalized visual voicemail on Android as well as iOS. Libon also announced version 2.2 of its iOS Libon app.

ENGADGET: Orange brings Libon to Android, adds picture messaging to iOS version

The most promising applications of mHealth for now are public-health messaging, stitching together smart medical grids, extending the reach of scarce health workers and establishing surveillance networks for infectious diseases.

ECONOMIST: A doctor in your pocket

Increased data capacity, after all, makes it easier to use alternatives such as instant messaging and Skype, which could become as pervasive on smart-phones as they are on personal computers.

ECONOMIST: Saturated mobile networks