Sony has updated its Xperia range of smartphones by announcing a new trio of devices at MWC. The Xperia X, Xperia X Performance, and Xperia XA all feature metalic cases, rounded glass fronts and great cameras. The two higher-end devices, the X and X Performance, feature a 23-megapixel camera with new technology that Sony is calling "predictive hybrid autofocus." This means that the phones will actually track moving objects and predict where they will go, adjusting the focus on the fly to capture fast movement without any blur. The XA meanwhile makes do with a 13-megapixel rear camera, and an 8-megapixel camera on the front.

The X Premium model is based on a Qualcomm Snapdragon 820 processor. The X, meanwhile, has a Snapdragon 650, while the XA makes do with a MediaTek MT6755. There's 3GB of RAM in the X and X Performance, while the XA gets 2GB.

All three phones have 5-inch screens, with the XA getting a 720p display, and the X and X Performance bumping this up to 1080p. Both these two higher-end models also have oval power buttons with built-in fingerprint sensors. The lower-end XA, meanwhile has the same power button (without fingerprint sensor) that we've seen on older Xperias.

All three devices will launch with Android 6.0 Marshmallow, and Sony is promising its usual battery life of up to two days. It's also partnered up with a company named Qnovo which makes adaptive charging technology. You can usually expect to see battery capacity drop off after a year or so, or around 300-500 charge cycles. Qnovo claims the new Xperias drastically increase battery lifetime to around 800 charge cycles before they start to lose capacity.

Xperia X, Xperia X Performance and Xperia XA each have a range of matching Style Covers and will roll out in four finishes; White, Graphite Black, Lime Gold and Rose Gold, from Summer 2016.

Introducing new Xperia smart products

Sony also introduced new Xperia smart products.

Xperia Ear is a new wireless ear-piece that brings a new way of communicating, without compromising on enjoying the world around you. It provides you with information such as your schedule, weather and the latest news to keep you up-to-date on the go. Powered by Sony’s voice technology, it responds to verbal commands, so you can ask it to make a call, perform an internet search, dictate a message or navigate to a certain location.

It connects to your Android smartphone via NFC or Bluetooth and talks to a host application, where you can customise settings, including the info you need when you first connect in the morning, touch commands and app notifications.

Its lightweight silicone ear-bud is built for continuous wear, with IPX2 water-protection and all-day battery life. It’s available in Graphite Black and the innovative case doubles as a charger, so you can simply pop it in when you need to recharge.

Xperia Ear will roll out from Summer 2016.

Xperia Eye is another conceptual vision for a compact, wearable wide-angle lens camera – with the flexibility to be attached to clothing or worn around the neck. It represents a proof-of-concept exploration to bring Sony’s camera and sensing technology to its smallest ever form-factor – featuring a 360-degree spherical lens for a natural field of view. Its intelligent shutter technology will use facial and voice detection to capture images, allowing you to preserve life’s moments without thinking about the technology.

The Xperia Projector concept will empower and stimulate creative family communication using a natural and interactive interface projection on any clear surface. It will respond to touch, voice and gestures just as you would interact with your smartphone screen.

The Xperia Agent concept is a vision for a personalised assistant. It will enhance everyday life by responding to voice and gestures – providing you with information, communication assistance and home appliance controls. It is also powered by Sony’s voice technology and will respond to a number of commands - and has a built-in camera and projector display for projecting content onto surfaces.

The RM-X7BT is an in-car Bluetooth commander that enables wireless music streaming and uses Sony’s voice technology to activate smartphone functions whilst driving. It consists of two units - an 'adaptor' module that enables wireless audio streaming and hands-free calls, and a 'commander' facilitates smartphone functions such as navigation, all whilst driving safely.

The RM-X7BT in-car Bluetooth commander will roll out from Summer 2016.