In late 2014, mobile IM service WhatsApp rolled out end-to-end encryption with TextSecure.
Mobile Device Encryption (FDE)
Full Device Encryption has been introduced, or is due to be implemented, in the world’s major consumer operating systems:
BlackBerry Messenger (BBM) was the trailblazer. Following the 2011 riots seen across England, monikered the “BlackBerry riots”, BBM was implicated as the system of choice used to orchestrate scenes anarchic destruction.
Apple OS X
Apple Mac OS X: FileVault 2
iOS on iPhone and iPad