Facebook messenger is my favourite group messenging and online messenging service available on Android. It's super fast, and it of course integrates with my friends using the behemoth that is Facebook.
Amongst the usual bug fixes, battery optimisations and performance improvements, Facebook Messenger 1.6.003, brings greater stability and support for Ice Cream Sandwich devices as well as updating the UI to fit better with the design ideals of ICS. Another fantastic part of the update is the ease of creating a new group message; it can now be selected when choosing the recipient of your message.
What's in this version:
Faster way to start conversations
Easier way to start group conversations
Updated visual design
Better support for Ice Cream Sandwich
Performance and battery life improvements