At CES in Las Vegas, ZTE has today unveiled its latest flagship smartphone, the Grand S II. It packs high-end specifications, including a 5.5-inch 1080p display and a quad-core Snapdragon 800 processor — as well as new voice recognition software that allows multiple users to unlock the device using only their voice.

The Grand S II will compete with the latest flagship devices from the likes of Samsung, HTC, and LG. It packs a speedy 2.3GHz Snapdragon 800 processor, 16GB of internal storage, a 13-megapixel rear-facing camera, and a 2-megapixel front-facing camera. There’s also a 3,000mAh battery that should last a great deal longer than its predecessors 1,780mAh battery.

The Grand S II’s main selling point, however, is its voice recognition features. Users can unlock the device using only their voice, and you can add multiple users at a time — so your spouse and your friends can unlock it, too, if you wish to give them that privilege.

You can also use your voice to snap pictures and control certain features while you’re behind the wheel.

ZTE hasn’t announced the Grand S II’s price tag yet, or how much it’ll cost, but we hope to hear more in the coming weeks.

• ViaEngadget