SONY XPERIA Z4 TABLET REVIEW, & PRICE

This year Sony has updated is flagship Android tablet so we have a new iPad Air 2 rival. Sony claims it's the world's lightest 10in tablet with a 2K screen so here's our Sony Xperia Z4 Tablet review. Also see: Best tablets 2015.

Last's years Z3 range included one tablet which was Sony's first smaller size, the 8in Z3 Tablet Compact. Instead of replacing that range – which also has the Z3 and Z3 Compact phones – Sony has added to it with the Xperia Z4 Tablet. It's a new 10in device which succeeds the Xperia Z2 Tablet so there is no Xperia Z3 Tablet in a 10in size.

SONY XPERIA Z4 TABLET REVIEW: PRICE AND COMPETITION

We expected the Xperia Z4 Tablet to come in at £399 matching the iPad Air 2 but it costs £100 more than that. Before you panic and run to the Apple store, this is because it comes with the Bluetooth keyboard dock so there is a reason for it.

Sony's main Android rival for the high-end 10in tablet is Samsung's Galaxy Tab S which was £399 but can now be purchased for under £300. It's a long way from being old and decrepit too, so represents quite a saving in comparison to Sony's new tablet.

The more expensive model with additional 4G LTE connectivity will set you back £579 placing it only £60 short of the Microsoft Surface Pro 3 which it is competing against considering the laptop style keyboard dock.

It's a real shame Sony has decided to only sell the tablet this way as many consumers will no doubt want just the tablet and it's not like you can sell the keyboard because other users will have one as standard. Retailers are saying the keyboard is free but it's clearly factored into the price and we hope Sony changes its mind in the future.

SONY XPERIA Z4 TABLET REVIEW: DESIGN AND BUILD

Its predecessor was and still is an impressive tablet and we didn't think Sony could do much to the 6.4 mm, 426 g chassis. However, it has managed to slim it down further to 6.1 mm which isn't much but the weight has dropped to just 392 g.

In comparison with the market leading iPad Air 2, it's the same thickness and a decent 45 g lighter so tops marks to Sony. The Xperia Z4 Tablet feels great in the hand with the weight particularly making it easy to handle. The firm calls it the 'World's lightest 10in tablet with brightest 2K display'.

Sony continues to offer dust- and waterproofing, this time to an IP68 rating which is the highest available. We've got used to the headphone port not needing a cover or flap to keep the moisture out but now the microUSB port doesn't either which is a great addition. Only having one flap for cards is ideal as you rarely need to open it.

Aside from the above changes, the design remains essentially the same. A reasonable bezel runs around the display which doesn't look great but means you can hold any side without needing to touch the screen, leaving your fingers in the way.

The Xperia Z4 Tablet will be available in black and white options but we've only seen black listed at retailers so far.

What we thought was an optional Bluetooth keyboard dock (BKB50) is now bundled with the tablet in the UK. It supports tilt and a trackpad for what Sony calls a 'premium laptop experience'. The Xperia Z4 Tablet slots in easily and then you can adjust the angle or close it like you would a regular laptop.

It all works pretty smoothly and there's a limit to how far back you can tilt the tablet so it doesn't topple over (unlike the Acer Aspire Switch 10). The keyboard is a little flimsy and the keys are small so it's not the optimum experience but you can certainly get a reasonable amount of typing done without pulling your hair out. The trackpad is surprisingly good and using Android with a mouse cursor actually makes a lot of sense.

Some things are awkward but there are many keys dedicated which alleviates this such as navigation, the drop down notification bar and even power. After a while you'll probably find yourself not using the touchscreen but our main issue is that not everyone will benefit from the accessory yet you have to pay for it.

Since there's no physical connection to the tablet, there's no hard drive, extra battery or ports such as USB in the way of features. It simply connects over Bluetooth and charges via micro USB.

SONY XPERIA Z4 TABLET REVIEW: HARDWARE AND PERFORMANCE

The screen size remains at 10.1 in but Sony has improved the resolution to 2560 x 1600 and boosted the brightness to 500cd/m2. That's plenty of brightness on offer and the pixel density of 299 ppi is impressive outpacing the iPad Air 2 which is 264 ppi. The 'Triluminos' screen looks great and the IPS panel means great viewing angles. We really can't fault it and it's up there with the Galaxy Tab S 10.5.

Other hardware upgrades include a Qualcomm Snapdragon 810 processor which is both octa-core and 64-bit. There's 3 GB of RAM to accompany it, 32 GB of internal storage and a microSD card slot for adding up to 128 GB more. 

SONY XPERIA Z4 TABLET: SPECS

• Android 5.0 Lollipop
• 10.1in IPS Triluminos screen, 2560x1600, 300ppi, 500cd/m2
• Qualcomm Snapdragon 810 processor, 64-bit
• 3GB RAM
• 32GB internal storage, microSD card slot (up to 128GB)
• 8.1Mp rear camera with Exmor RS
• 5.1Mp wide angle front camera
• MHL 3.0
• Wi-Fi 802.11b/g/n/ac
• NFC
• Bluetooth 4.1
• Nano-SIM (LTE model)
• 6000 mAh battery
• 254x167x6.1mm
• 392g (Wi-Fi), 396g (LTE)
• Black, white