Google is in the process of rolling out an unexpected update for its official Play Music application, which comes pre-loaded on all Android devices. The upgrade brings a couple of interesting new features, including an “I’m feeling lucky” radio station and a rather useful user interface tweak.

While you may see the same adverts inside the Facebook app no matter which smartphone you use, those ads are 1,790% more profitable on the iPhone than they are on Android-powered smartphones. That’s according to an analysis of over 200 billion Facebook ads from Nanigans, one of the biggest customers of Facebook ads.

Twitter hopes to compete with instant messaging services like WhatsApp and Line with a new app that’s dedicated to direct messaging, AllThingsD reports. The company hopes the move will bring “the long-buried feature to the forefront” and place a new emphasis on its private messaging capabilities.

Samsung has today begun rolling out its latest Android 4.3 software update to the Samsung Galaxy S4 LTE (GT-I9505). Most of the changes and improvements in this release are under the hood, so users should notice an increase in speed and better performance, as well as improved stability.

An upcoming Google Play 4.4 update for Android has leaked, revealing a number of design and navigation changes. It’s still a “work in progress,” sources claim, but it gives us a taster of what we can expect from the Google Play app when it is updated for Android 4.4 KitKat in the coming weeks.