Android L
Screenshot of Android L build LRW58J on Galaxy S5. Sammobile

An early Android L test build designed for the new Galaxy S series smartphone has been leaked suggesting Samsung has already started testing Google's new Android firmware for its Galaxy smartphone.

Sammobile has exclusively shared the Android L, which will be called Android Lollipop. Test firmware with build version LRW58J has been identified for the European version of the Galaxy S5 (SM-G900F).

The leaked build reveals several changes Google has introduced in its new Android iteration.

Samsung has just started testing the build, which is in its alpha stage, hence, bugs are likely.

Galaxy S5

TouchWiz UI

The build offers a preview of Android L with a new TouchWiz interface for the Galaxy S5. Google appears to have completely revamped the look of the operating system, which it calls "Material Design". But the OEMs are using the old interface on top of Android L.

Samsung seems to have improved the UI. Samsung has ditched the old blue theme, which has been there since the Galaxy S2, in favour of a new white theme, which is expected to be more pleasing.

Enhanced apps and new Lock screen

Samsung has customised its system apps such as Dialer, Messages, Memo and Clock based on the Material Design guidelines, while there is no in-app animation.

One of the most notable features of the Android Lollipop is the new lock screen, which now shows notifications along with date and time. The notifications from the apps can be toggled to disable or enable; besides, users can limit the notification content displayed on the lock screen.

Users can also view a maximum of four notifications on the lock screen and due to this widgets can no longer be placed on the lock screen.

Galaxy S5

Heads-up notifications

The LRW58J build shows Google's heads-up notifications in Android L to alert users to incoming calls, messages and low battery without interrupting the current activity, which is really for gamers. There is a handy clipboard tool containing the history of screenshots and copied texts.

Another noteworthy feature is the support for MirrorLink that allows users to mirror their device's screen to the display of the car.

The Android L with new ART runtime is likely to be smoother and faster than the previous KitKat version.