So to control your costs, if you use data-intensive mobile services, your best bets are to use Wi-Fi whenever possible and to install apps or other tools that allow you to keep a close eye on your data usage.

CNN: Analyst: iPads, Kindles, GPS units to be cheaper in 2012

Pyxis Mobile is best known for it mobile application platform that was used primarily to design and build apps for the financial services industry.

FORBES: The Mobile Pivot: Pyxis becomes Verivo Software

Best Buy has been broadening its products and services with more mobile phone offerings, web services as well as new Logitech and Sony devices associated with Google TV.

FORBES: Best Buy Worth At Least $45 If Sales Per Square Foot Swell

Thuraya is looking forward to bringing the best of mobile satellite devices and industry expertise in support of critical communication services in our partnership with SoftBank Mobile.

ENGADGET: Softbank will offer satellite phones for use during natural disasters

Tucows, best known for its global internet services, launched a new set of mobile phone features for business owners.

FORBES: What Phone Should I Get? Ting Cell Phone Plans For Business Owners

"Not only does Tencent have a cash cow in its strong gaming business, but the company is also best-positioned in high-potential markets like social media and mobile Internet services, " said Jefferies analyst Cynthia Meng, who has a buy rating on Tencent's stock.

WSJ: China's Tencent Outperforms Its Western Peers

You might not see the Chinese telecommunications giant's logo plastered over handsets, but its networks underpin the services provided by many of the world's best-known mobile phone service providers.

BBC: Huawei Technologies: Controversial success story

It is a force of nature for mobile consumers who want to pick the best restaurant for dinner, but increasingly for all sorts of professional services and retail stores.

FORBES: Yelp Review Sting Helps Consumers And Business Owners