Finnish smartphone company Jolla has started taking pre-orders of its first device.

Its phone, which runs the Sailfish OS and has a 4.5-inch display, is currently priced at €399 (£337) plus shipping. Full details aren’t known but it’ll run a dual-core chip and will support 4G.

Yahoo! has agreed a deal to acquire blogging and media sharing platform Tumblr for approximately $1.1 billion (£724 million).

Tumblr will continue to operate as a separate business with David Karp as CEO.

Mary Grant, who was CEO of the Phones 4U retail business, is reported to have left the company for ‘personal reasons’.

Mobile News reports that Phones 4U Group CEO Tim Whiting is temporarily taking on her role in addition to his own work.

Juniper Research has forecast that 2 billion mobile and tablet users will be watching TV and video on their devices by 2017.

This worldwide growth is being attributed to two main factors: the uptake of higher-quality mobile devices and the growing popularity of short (and easily shared) video clips.

HP has announced a new Android device with a detachable keypad, enabling it to transform between notebook and tablet.

It’s called the HP SlateBook x2 and was revealed alongside a convertible Windows-based computer.