Google has completed its deal with Motorola Mobility for $40 a share, totalling approximately $12.5bn.

The deal marks Google’s biggest acquisition to date. However, for some the deals comes with fears that Google will use Motorola Mobility's hardware to vertically integrate its Google's Android OS product ecosystem (similar to Apple's iPhone and iPad) to the detriment of other hardware suppliers.

Google CEO Larry Page said "I'm happy to announce the deal has closed. Motorola is a great American tech company, with a track record of over 80 years of innovation. It's a great time to be in the mobile business, and I'm confident that the team at Motorola will be creating the next generation of mobile devices that will improve lives for years to come."

Google’s Dennis Woodside, who will take over from Motorola Mobility CEO Sanjay Jha, said "Motorola literally invented the entire mobile industry with the first-ever commercial cell phone in 1983. Thirty years later, mobile devices are at the center of the computing revolution. Our aim is simple: to focus Motorola Mobility's remarkable talent on fewer, bigger bets, and create wonderful devices that are used by people around the world."