Nokia announced the Nokia X1-01 dual SIM phone. The Nokia X1-01 mobile phone offers a dual SIM experience superior to any other dual SIM phones on the market, remembering the settings for up to five different SIM cards - and with no compromise on battery life, music features or messaging. Dual-Standby and dual SIM phones allow users to choose which SIM card to use for calls, messages and other functions, and switch between them easily from call to call. The ‘Dual-Standby’ part means that you can always receive notification of calls and messages on each account - rather than having to switch your SIM cards on and off.

Nokia announced the Nokia Oro Smartphone. The Nokia Oro Smartphone incorporates 18-carat gold plating, a sapphire crystal and leather from one of Scotland’s finest Caledonian herds. Inside, it reaches the same high grade as Nokia’s other recent smartphones. It’s Symbian-based, with the latest Symbian Anna update. The Nokia Oro supports pentaband radio connectivity, up-to HSDPA 3G and Wi-Fi. The Nokia Oro is equipped with a 3.5-inch AMOLED display, an 8 megapixel digital camera with 720p video recording. Functionally, it’s not so different from other recent Smartphones from Nokia. But that’s quite a rarity in the “premium Smartphone” business.

Boost Mobile and Motorola Mobility add more variety to Boost’s handset line up with the announcement of a new Motorola mobile device, the Motorola Clutch + i475. The Motorola Clutch + i475 mobile phone, the successor to the highly popular Motorola Clutch, is a candy-bar QWERTY mobile device with a larger display screen for cost-conscious, text-heavy customers who want to get more out of their conversations with friends and family. "We are telling our customers to ‘Be Heard’ and are addressing the needs of our loyal base of walkie-talkie users with the new Motorola iDEN Series Clutch + i475," said Andre Smith, vice president, Boost Mobile.

Boost Mobile and Motorola Mobility add more variety to Boost’s handset line up with the announcement of a new Motorola mobile device, the Motorola Theory. The Motorola Theory mobile phone combines style and practicality with its premium design and enhanced messaging capability. "The Motorola Theory mobile phone on the Nationwide Sprint Network is an affordable solution for customers looking for a broader data and messaging experience," said Andre Smith, vice president, Boost Mobile. The Motorla Theory, a candy-bar QWERTY mobile device, is priced at $79.99 (excluding taxes) - offering consumers a sleek handset at an affordable price.

Boost Mobile and Motorola Mobility add more variety to Boost’s handset line up with the announcement of a new Motorola mobile device, the Motorola i412. The Motorola i412 is ideal for wireless users craving an uncomplicated phone for talking, texting and walkie-talkie functionality. The Motorola i412 enables instant communication through Boost Mobile’s nationwide walkie-talkie service, allowing consumers to connect with friends and family with a simple push of a button. "We are telling our customers to ‘Be Heard’ and are addressing the needs of our loyal base of walkie-talkie users with the new Motorola iDEN Series i412," said Andre Smith, vice president, Boost Mobile.

Sony-Ericsson introduced the Sony-Ericsson Xperia Acro, a new addition to the Xperia Smartphone line-up, designed specifically for the needs of users in Japan. The Sony-Ericsson Acro mobile phone builds on the success of the product family with a 1GHz Qualcomm Snapdragon processor, and runs on the latest Android platform - Gingerbread 2.3. Best-in-class imaging and display technology features from Sony - the perfect enabler for its mobile TV functionality. The new Sony-Ericsson Xperia Acro Android mobile phone will be available in Japan only.

Motorola introduces the Motorola Droid X2 Smartphone. The Motorola Droid X2 Android Smartphone is built for the people who do everything on their Smartphone. With the new Motorola Droid X2 mobile phone you get an incredible mobile browsing experience on a large, high-resolution display, while taking advantage of all the web has to offer - from blazing through YouTube videos, to exploring the newest Android apps and updating all of your social networking websites from one place. The Motorola Droid X2 Android handset is the first Smartphone at Verizon Wireless to support a dual-core 1GHz processor, delivering up to twice the power as its predecessor the Motorola Droid X.

Research In Motion introduced two new BlackBerry Bold Smartphones. The BlackBerry Bold 9900 and BlackBerry Bold 9930 Smartphones feature a stunning design that integrates an easy-to-use BlackBerry keyboard with a high resolution touchscreen. The BlackBerry Bold Smartphones are built on a new platform powered by the BlackBerry 7 operating system and designed to deliver the ultimate in communications, multimedia and productivity for users around the globe. The new BlackBerry Bold Smartphones are expected to be available from carriers around the world beginning this summer.

Samsung Mobile is aiming - with full force - on smartphone market share and act so not without success. Especially the Samsung Galaxy smartphones receive a lot of attention. Not so long ago Samsung introduced the Galaxy Ace smartphone, a new Android phone targeted on a hip, lifestyle influenced public. The Samsung Ace mobile phone is equipped with a digital camera and a build-in LED flash. The resolution is five Megapixels, sufficient for Facebook and other social media channels.

• Read our full Samsung Galaxy Ace review.

Following on the success of the Facebook for BlackBerry Smartphones app, Research in Motion announced Facebook App for BlackBerry PlayBook - a new Facebook app that delivers popular features of Facebook, optimized for the LCD display of the BlackBerry PlayBook tablet. There are many users of our Facebook App for BlackBerry Smartphones app who are staying in touch with their social network while on the go," said Tom Goguen, VP at Research In Motion, "Now with Facebook App for BlackBerry PlayBook tablet we can also offer customers highly engaging social experiences optimized for the PlayBook including the ability to share FaceBook pictures and videos with friends and family on an HD-TV.