We covered the HTC One quite extensively at its launch just over a week ago. We had been given the chance to play with the device at a pre-launch event in London but weren't allowed to take any pictures. So we've taken the opportunity to pop by the HTC booth at the Mobile World Congress in Barcelona to have another look at HTC's latest flagship and snap some pictures of the device.

If you haven't followed the smartphone news over the past couple of weeks, the One is HTC's latest high-end smartphone. It comes with an impressive feature set and specifications. A 1.7 GHz quad-core processor powers the Android 4.1.2 operating system and content is displayed on a beautiful 4.7-inch 1080p full-HD screen. 

 The HTC One is thin, with aluminium edges.
 At the top of the device you find the headphone jack and power button.

Despite the processor and screen specifications, from a Dpreview Connect perspective the most interesting aspect of the new device is the camera. While most manufacturers this year have opted for a 13MP camera module, HTC is going the opposite way in terms of sensor resolution and offers a camera with only 4MP. However, these pixels are similar in size to those found in enthusiast compact cameras such as the Canon Powershot G15 or Fujifilm X20, and promise much better low-light performance than conventional smartphone sensors.

HTC likes to speak of 'ultrapixels' rather than megapixels when talking about the One, but this is simply a marketing term, essentially meaning 'megapixels from large photosites.' The sensor is combined with a fast F2.0 lens. 

 The HTC One's back features the camera which offers 4 'ultrapixels' and a F2.0 lens which in combination should provide better low-light performance than your average camera phone. 

In the hand the HTC One feels as nice as it looks. It's pretty lightweight and with its 4.7-inch screen, it's the most compact device with a 1080p screen we've seen so far. While a few other full HD smartphones have been released this year all of them come with slightly larger 5 or 5.5-inch screens which mean the devices are bulkier and heavier overall. The HTC One is in terms of dimensions and weight pretty much in line with last year's 720p devices such as the Samsung Galaxy S3 or the HTC One X.

The One comes with a couple of HTC-specific pieces of software which look pretty interesting. Blink Feed combines updates from  variety of news sources with your own social media accounts, such as Facebook, Twitter, LinkedIn and Flickr, and displays them in one customizable stream which can be placed on your home screen. It's a little similar to the popular Flipboard social news reader and looks and works really well.

 Blink Feed combines news with your social media streams. 
 All Blink Feed sources can be customized in the settings.

ZOE movies are another cool and fairly unique feature that can be activated in the camera app. It simultaneously records a three-second full HD movie clip and still images at 5 frames per second. The short clips can be combined in albums but you can also compile a composite still, manually selecting your favourite expression from each person in group shots and extract still images. The feature looks interesting in the demo and we are looking forward to testing it in-depth once we get a review unit, along with the HTC One's image quality. Until then make sure you read our previous coverage to get more information about the device.

The HTC One's camera app features separate movie and stills shutter buttons and offers a variety of shooting modes. There is also a dedicated ZOE movie button.