In the past few day, reports have emerged that , developer of browsers for desktops and mobile phones. Facebook executives have said that the mobile world is key to further expansion for the company.

On Thursday, , Camera, even before it closed a deal to buy photo-sharing app Instagram.

The US$1 bilion was announced April 9.

The latest reports about Facebook's smartphone efforts also come within a week after Google . The close of the deal means that Google has a hardware manufacturing arm with which it can closely work to develop Android. Google will also have control of Motorola's massive patent portfolio. Motorola Mobility has said that it owns or has applied for more than 24,000 patents.