Samsung has unveiled yet another Android-powered smartphone in its Galaxy S range in the lead-up to what industry insiders are hoping will be a big year for mobile developments at Mobile World Congress (MWC) in February.

Samsung is rumored to also be launching the successor to the popular Galaxy S II handset (the Galaxy S III) at MWC -- a dual or quad-core device with a 12MP camera and a 4.5" or larger HD display. Additional rumors suggest that Samsung will instead unveil a larger Galaxy Tab.

The tablet is said to have a 11.6" display and a 2GHz processor and to support the same stylus input as Samsung’s Galaxy Note.

Blogs are also suggesting that Nokia will take the wraps off its 12MP Lumia 910 handset, Sony will unveil up to 10 new phones, and Huawei will show off the "smartest, fastest and most high-performing smartphone."

While MWC rumors abound, the company is touting an entry-to-mid-range Android smartphone called the Samsung Galaxy S Advance.

The handset runs Android 2.3 Gingerbread and sports a dual-core 1GHz processor, a 4" Super AMOLED display, 5MP and 1.3MP cameras, and Samsung’s ChatON cross-platform communication service.

The Samsung Galaxy S Advance will arrive in Russia in February. A gradual rollout is then planned for other CIS countries, Europe, Africa, Middle East, Southeast and Southwest Asia, Latin America and China. Pricing has not been announced but it is expected to fall in the mid- to low-end smartphone pricing bracket.

Mobile World Congress runs from February 27 to March 1 in Barcelona, Spain.