Another wearable device revealed as well
Samsung has taken advantage of Mobile World Congress in Barcelona to announce its new Galaxy S5 smartphone.
The new handset runs Android with a 5.1-inch full HD screen and a 2.5GHz quad-core processor.
Intel-owned online security business McAfee has made its Mobile Security product available free to Android and iOS users.
It follows an announcement made earlier this year by Intel CEO Brian Krzanich.
Yota Devices, which was showing a dual-screen Android smartphone at Mobile World Congress last year, has unveiled its new YotaPhone today.
The new phone has larger screens than last year's model and has added touch-control to the e-ink side, offering more interactivity. It means users can receive notifications when the main screen is off - and can then respond to them.
Dixons Retail plc and Carphone Warehouse plc have confirmed they’re are in preliminary discussions about a possible merger.
Dixons operates over 1,100 stores and online services across 16 countries, while Carphone Warehouse has around 2,000 stores but a smaller European footprint.
Sony Mobile has started Mobile World Congress with two new smartphones and a new tablet.
The Sony Xperia Z2 smartphone runs Android on a 2.3GHz Qualcomm processor. There’s a 20.7 megapixel camera sensor and 4K video recording, plus a 5.2-inch full HD display. In addition, the handset - just 8.2mm deep - incorporates digital noise reduction and is waterproof to IP58.