The Sony Xperia J runs Android 4.0 Ice Cream Sandwich out of the box, which is far from the platform's latest version. However, Sony has promised that an update to Jelly Bean should come in 2013, as soon as the maker's flagship devices get the newer software.

The Android interface has been heavily customized with new themes, additional widgets and social networking integration. There are widgets that aggregate your Facebook and Twitter feeds and notify you when a Facebook friend of yours has a new post. Another widget informs the user when a friend has recommended a cool app, a song, or a video for you to check out. And in case your cellular plan comes bundled with a number of free text messages, there is a widget that can count them for you. All in all, the interface is okay, and the features that Sony has thrown in could be quite useful, especially if you wish to stay constantly connected to your favorite social networks.

For the most part, the on-screen virtual keyboard is comfortable to use, but in some rare cases, it lags so your taps don't get registered instantly. It comes with a built-in spell checker and can correct mistakes as you type, which can be quite useful.

Processor and memory:

Nothing impressive to see here, folks. The Sony Xperia J comes with a modest Snapdragon S1 system-on-a-chip – the MSM7227A, with a single-core CPU maxing out at 1GHz and enhanced Adreno 200 graphics. There are 512MB of RAM available, which is more than expected considering the smartphone's tier. Sadly, the handset feels underpowered: lags are common, especially if you have an app doing its thing in the background, and we often notice frames being dropped while navigating through the interface. Many of the popular video games are playable, but some of the titles featuring complex 3D graphics and special effects are sometimes too choppy to enjoy.

Quadrant StandardAnTuTuNenaMark 2
Sony Xperia J1769348419,6
LG Optimus L71886284219,2
HTC Desire X2361493233,6
Sony Xperia sola 2294541527,7

The Sony Xperia J has only 4 gigabytes of on-board storage, out of which less than 3 gigs are available to the user. Chances are you'll have to get a microSD card in order to expand the smartphone's capacity as you'll run out of space sooner or later.

Web browser and connectivity:

The processor's lack of computational power can be felt when surfing the web as well, regardless of whether the stock browser is being used, or an alternative such as Chrome. When a relatively heavy web page is being displayed, zooming in and out is very choppy, and it takes a while before the section you are viewing gets rendered. Disabling the plug-ins from the browser's settings menu does not improve its performance by much.

As far as connectivity is concerned, all the mandatory features are supported, including Wi-Fi, 3G, Bluetooth and GPS. You also get an FM Radio with RDS functionality. As the case is with all Android handsets, files from a computer can be loaded onto the Sony Xperia J with the use of the microUSB cable, which comes included in the set.

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