Features
Compared to the majority of other touchscreens, the KU990's screen is very responsive and can be set to vibrate when you touch it, which provides more tactile feedback than when you simply tap a flat display. Similar to the LG Prada's interface, the KU990's software interface features finger-friendly icons and an attractive layout. Many reviewers have said they found it difficult to tap the small icons but we didn't have any problems with them at all.

The LG KU990’s large touchscreen cleverly vibrates when you touch it.
The KU990's proprietary Web browser is one of the best browsers we have seen on a mobile phone. Similar to the iPhone's browser, you can view full-sized Web pages at a reduced size and then zoom in on the sections you want to see properly. Web pages loaded relatively quickly but we did notice some lag, which may have been caused by network issues or possibly our review unit. The KU990 comes with HSDPA, so theoretically you should be able to download pages at up to 1.8Mbps, which is almost as fast as many people's broadband connections at home.
There's no Wi-Fi, which is a shame but if you're on a flat-rate data plan then we think HSDPA is a better option, otherwise watch out as data charges can be hefty.
Interestingly, you can upload videos directly to YouTube and download them too, but unfortunately our review model didn't have the app pre-installed so we're not sure how well it works. We're assured it will be installed on the final model.

From the back the KU990 looks like a standalone digital camera.
As for taking normal pictures, the 5-megapixel camera is very capable and of a similar quality to the Nokia N95's camera. You can adjust the size of images, picture quality, ISO and white balance, among other things.
The digital stabilization feature reduces blur but don't expect the same level of quality as optical stabilization. Equally, although the KU990 has a xenon flash, we didn't find it as bright as a standalone camera's flash, but it is better than an LED photo light.

The picture viewer lets you see photos scattered about as if they were thrown on a table.
Once you click on a picture you want to see, you can zoom in and move around it by brushing your finger across the screen as if you were physically pushing a real picture about. You can also edit photos using the KU990's photo-editing app.
As camera-phone photo-editing apps go, the KU990's is one of the best we've used, offering users the option to add text, doodles, effects and fun things such as morphing effects, all of which look good when viewing on the KU990's large screen. It's not Photoshop, but it's not bad for quickly editing a photo before sending it to a friend via MMS.

The shutter button is large and easy to press.
Other features include an attractive calendar, a fun 3D shoot 'em up game, speakerphone mode and a music player that supports MP3, AAC, WMA, WMV and AMR formats. The music player works well and lets you sort through artists and album art, similar to on most standalone MP3 players.
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