Popular blog platform Tumblr has finally announced the launch of mobile advertisements in its iOS as well as Android apps.

Tumblr said the users of its iOS and Android-based apps would see up to four advertisements per day, and that the advertisements would be differentiated with an animated dollar sign ($) icon.

On the first day, the advertisements were from GE, Pepsi, Warner Bros, ABC Entertainment and ABC Family.

Social-networking giant Facebook's free voice calling service has finally become available at iOS devices in the U. K.

The free service can be accessed via the Facebook Messenger app for iOS-based Apple iPhone and iPad. Users can see a newly added "free call" button in the list of options on the app, which they can use to make calls to any of their friends and relatives mentioned in their Facebook contacts.

Giving a major setback to Apple Inc, the Mexico Supreme Court ruled in favor of a local technology services firm in the Ifone brand name case.

Apple had challenged the use of the Ifone brand by the Maxican firm on grounds that the Maxican firm's right to use the brand name had expired, but a federal court disagreed and ruled that Ifone SA was making proper use of the brand name.

Karbonn has just announced the release of a new promising Android-based smartphone dubbed the Karbonn Retina A27.

Available online at Saholic for Rs 9,090, the Retina A27 runs on Google's Android 4.1 Jelly Bean operating system, and features a 4.3-inch qHD IPS display that offers a resolution of 960 by 540 pixels.

Finnish handset maker Nokia has so far launched five Windws Phone 8 OS-based Lumia smartphones, ranging from pocket-friendly Nokia Lumia 520 to top end Nokia Lumia 920. Let's have a quick look at all of these Lumia handsets one by one:

The BlackBerry Q10, which will feature a physical keyboard, may consume 8-10 weeks after the release of the full-touch BlackBerry Z10 smartphone to become available in the U. S. market.

As the BlackBerry Z10 is expected hit U. S. stores around mid of March this year, the Q10 will therefore become available in the country sometime in to mid-May to early June.

The 8-10 weeks holdup in the arrival of the Q10 was announced by Research in Motion (RIM) Chief Executive Thorsten Heins in a recent interview.

With Apple having decided to give a miss to the near field communication (NFC) technology in its newly-unveiled sixth-generation iPhone – the iPhone 5 – which is scheduled to hit the markets on September 21, a number of mobile payment experts are of the opinion that Apple’s ‘no NFC’ decision for iPhone 5 might not be regrettable, at least in the near future, because of the slow rollout of the technology.