Here’s a brief look at the major announcements made at the Mobile World Congress in Barcelona, on Day Zero and Day one.

Comviva – Mobile VAS company Comviva has launched Hola!, a standards based solution that enables development, testing, deployment, management, distribution and marketing of a wide range of client, SMS & USSD based mobile applications, for offering social networking sites such as Facebook and Twitter,  email as well as web feeds on the mobile phones. The company claims that the solution will allow telcos to extend web services to all phones including mass market feature phones, monetize the service offering and generate usage patterns for cross selling, and will give more pricing options and service without the need for data connectivity. Press Release

OnMobile – Mobile VAS provider OnMobile, has launched a suite of mobile services, namely, OnCall Video, OnCall Voice Presence, OnCloud Locker and OnCloud Secure that allow users to video conference, manage calls through voice presence, share and store data on the cloud and, backup and remote wipe secure data in addition to tracking the phone. Press Release

Opera – Opera launched Opera Mobile for MIPS-based Android 4.0 tablets; Opera Mobile 12 for Android and Symbian with support for unlimited speed dials and WebGL on Android and a preview version of Opera Mini’s next iteration which brings in social functions to feature phones through a new ‘SmartPage’ feature.  It announced a revamped Opera Mobile Store with what it claims to be better distribution and monetization capabilities for developers. The company claimed that Opera Mobile Store now has 55,000 apps with more than 45 million monthly app downloads and is the fifth-largest mobile app store in the world. Opera also revamped its mobile ad exchange and rebranded it as OMAX. It will now offer end-to-end mobile advertising solutions to brands, agencies, publishers and mobile operators around the globe. Press Releases

HTC – HTC announced a new series of Android phones dubbed as ‘HTC One’ under which it announced three new phones namely HTC One X, HTC One S and HTC One V. In addition, it also announced a new iteration of its Sense Android skin, HTC Sense 4.0, which will feature improved camera software, ‘Image Sense’,  deeper integration of Beats Audio and a new in-car software. The company has also partnered with Dropbox to offer two years of free service and 25GB storage for customers of its new ‘HTC One’ handset series. Press Release

Sony – Sony introduced two new Android phones to Xperia NXT series of handsets namely Sony Xperia U and Sony Xperia P. Sony Xperia U will feature a 3.5-inch Reality Display, 1GHz dual-core processor and a 5-megapixel camera while Sony Xperia P will feature a 4-inch reality display, 1GHz Processor, 8 megapixel camera, NFC Support and a docking station called SmartDock which offers USB support. Press Release

Nokia – Nokia expanded its Asha Series of Series 40 feature phones by introducing Nokia Asha 202, Asha 203 and Asha 302 with support for Mail for Exchange. It announced a revamped version of its SMS based service Nokia Life Tools calling it Nokia Life which will be preloaded on Nokia 202 and Nokia 203 handsets. The company claims that more than 50 million people have used the service till now.

Nokia also added new handsets to its Windows Phone device portfolio by introducing Nokia Lumia 610 and rolling out Nokia Lumia 900 worldwide. Along with it, Nokia also introduced new Windows Phone services including Nokia Reading, which allows users to read news, ebooks and listen to audio with the ability to access this content offline, and pin dynamic content as a live tile; Nokia Transport which provides door-to-door, underground, tram, suburban train, and bus directions for over 500 cities across 46 countries; and an updated Nokia Drive, its navigation app. In addition, it introduced a Symbian based imaging focused handset, Nokia 808 Pureview, which features a 41 megapixel sensor, Nokia’s new PureView imaging technology (which will support new high-end imaging experiences for future Nokia products), Dolby Headphone technology and Nokia Rich Recording feature which allows users to record audio at CD-like quality. Press Release

Intel – Orange has launched an Intel-based smartphone in France and UK, codenamed as Orange Santa Clara. This will be the first smartphone in Europe to use the Intel Atom Z2460  ( Medfield) chipset. Read more at MobileBusinesBriefing