Samsung has fought back against an Internet video clip which alleges that its new slimline mobile phone is easy to break.

The 21-second video circulating on the Internet is entitled "Samsung handset, easy to break at one try!" and shows a smiling foreign woman snapping a Samsung Ultra Edition mobile phone in half.

Ultra Edition, one of the world's slimmest handsets, has been a huge success for its sleek design and various functions.

Samsung, the world's third-largest mobile phone maker after Nokia and Motorola, believes the handset had been damaged earlier to make it appear easy to break.

"We are considering taking action after conducting a probe into who made and distributed (the video clip)," a Samsung spokesman said in a conference with AFP.

Ultra Edition, which was unveiled in June, was Samsung's latest success at a time when it has lost ground to rivals in overseas markets.