In this photo illustration, The Twitter logo is displayed on a mobile device as the company announced it's initial public offering and debut on the New York Stock Exchange on November 7, 2013 in London, England.

Users posted photos of police brutality instead of positive images.

Visitors take pictures of the new Nokia XL device during the first day of the Mobile World Congress 2014 at the Fira Gran Via complex on February 24, 2014 in Barcelona, Spain.

The Finnish phone maker expects the finalizing of its $7.2 billion deal on April 25.

An Iranian man steps past an Apple logo in a computer shop window along Vali Asr Avenue on December 7, 2013 in Tehran, Iran.

The company has released promotional videos highlighting its environment-friendly work.

The Twitter logo is displayed on a banner outside the New York Stock Exchange (NYSE) on November 7, 2013 in New York City.

The social network is launching an ad network to reach 1 billion users.

Nokia CEO, Canadian Stephen Elop, unveils the Nokia Lumia 1520 (displayed on the giant screen) during an event to unveil Nokia's latest products on October 22, 2013 in Abu Dhabi.

The company's tablet has been found to have a faulty charger in the E.U.