Mobile phone maker Motorola Mobility is to cut 4,000 staff worldwide as part of efforts to return to profitability.

This job losses are the equivalent of 20% of its workforce.

The firm, bought by Google last year, said it planned to close or merge about one third of its 90 facilities which include offices and factories.

US-based Motorola also announced a shift in emphasis away from low-cost non-smartphones to "more innovative and profitable devices".

Two-thirds of the jobs will go outside of the US, Google said. It expects the cost of severance packages to be $275m.

More: http://www.bbc.co.uk/news/business-19241930