Samsung's Galaxy S 4 continues to be one of the fastest selling phones ever. And if you have bought one then you'll need one of these high-end-ish, luxury cases to protect your lovely new mobile.

Sony's Xperia Z mobiles with its great camera, superb sound quality and not forgetting, waterproof screen has become one of the surprise mobile hits of 2013. And it bodes very well for what the company might unveil in the future.

If you have bought one though, you'll need a decent case. Here is the best of what's available.

Sony is on a bit of a roll at the moment. Here are some other excellent new products from the company.

Since its launch the Q10 has become very popular with BlackBerry devotees. This could well be because its keeps the company's trademark keyboard at the expense of a few inches off the screen size.

Naturally there has already been a large number of cases for the mobile. Here is our pick of the bunch.

Griffin's Survivor mobile phone cases have the reputation for being among the toughest in the business. So after rolling out versions for the iPhone 5 and the iPad mini the company has turned its attention to the Samsung Galaxy S4 with a super tough case that's due to land shortly.

The case is made from extra-thick silicone that envelopes your phone, protecting the back, sides and edges from bumps, jolts and other nasties. It also has a smooth, matte textured exterior that's easy to grip yet includes cutouts for access to controls, headphone jack and dock connector. The Survivors retail for £34.99 for the phone versions and £49.99 for the iPad mini option.

Griffin also has the perfect present for any father wanting a bit of peace on his special day and any other one to be honest. Its Griffin CinemaSeat for iPad and iPad mini means that youngsters in the back seat can be kept very quiet while dad focuses on the important stuff - that'll be the driving then. Yours for £29.99.

Details and availability here.

Bought yourself a lovely new iPad mini? Well the range and the quality of the cases for your new device gets better all the time.

Here are our favourite new high-end iPad mini cases.

The (accidental?!) reinvention of the Barbour brand from one that's forever associated with hunting, shooting, fishing brigade to one that even the coolest Shoreditch hipsters can wear is one of the most bizarre transformations of the past few years.

And if you can't quite get enough of quilted stuff then now you can give your gadgets the Barbour treatment courtesy of a deal with Proporta.

The pair have just launched a shed load of new accessories for all manner of gadgets ranging from the upcoming (it is tomorrow folks,) Samsung Galaxy S4 through to the Apple iPad 3.

Although quite a few of them are in classic quilted Barbour style, though there's tartan and tweedy stuff too. Prices start at £20 for an iPhone case through to £80 for the full on quilted experience for your tablet.

More here.

So you own a Samsung Galaxy S3 and you have big plans to take it out and about with you this summer. Might be time then to invest in a serious case for your precious mobile - one that will keep it safe, dry and free from dust and other nasties.

Here then are nine of the best cases available

The Amazon Kindle HD has been one of the biggest gadgets of the last twelve months. So not suprisingly there has been a huge demand for cases for the tablet.

Here is our pick of the bunch

It is up there with the iPhone 5 as the most popular handset onthe planet - well until they launch the S4 anyhow.

So it is not suprising that there is a huge collection of high-end/luxury cases for the Samsung Galaxy SIII.

Here is our pick of the bunch. Prices start at around £40 and go up to very very expensive.

Over the last few days I have noticed that there are a growing number of cases on sale that are supposed to be for the Samsung Galaxy S4.

Yep, that phone that is being kept under wraps and won't actually emerge until 11pm on Thursday night.

So can we take anything from the cases? Do their dimensions tell us anything about the dimensions and size of the phone itself?

Probably not. I think it is largely case makers hedging their bets. They know they will have Galaxy S4 cases available very soon and that also the S4 probably won't be too much of a departure in size from the S3.

Mobile Fun has been teasing us with the cases pictured above which show a more curvaceous design that many people have been expecting. They seem to have been removed from the website now, but they do show a very different design from the S3.

Tech Digest also noted the following.

Other small details are also revealed; there is a cut out for a headphone jack on the top, not bottom of the device; the loudspeaker looks set to sit on the lower left handside of the handsets rear; the power button appears to sit on the right hand side while the volume rocker sits on the left. Also, the camera flash now appears to be directly underneath the camera lens, shifting slightly from its positioning on the Samsung Galaxy S3.

Then here's another one from Snugg - which is being sold via Amazon - which has the speaker at the top of the phone. It looks basically like an S3 case which has been sneakily rebranded.

This this Galaxy S4 case is even more confusing.

Anyhow we will find out soon enough.

There's no denying that the BlackBerry XZ10 has split opinion in the tech world. Some pundits love its Swiftlkey created text input method and split screen credentials. Others are less convinced.

If you are reading this though chances are you have taken the plunge.

With this being a BlackBerry product though the Z10 accessories followed shortly after. We have already run one case round up here. Over the last few weeks a few others have emerged and here are a few nore to peruse.

Good news for Samsung Galaxy S3 owners. The first PowerCase for the handset is just about to go on sale in the UK via retailer Firebox.

The case clips on to the back of the handset and boots its power by eleven hours talk time, or six hours of web surfing.

It provides protection for ports and plugs, weigs80-odd grams and charges lithium-polymer backup battery charges up in five hours. You charge it up at the same time you charge the phone's internal battery.

Like the S3 itself it comes in both black and white.

It is on sale here for £39.99. There's also a model for the iPhone 5 for £44.99 here

BlackBerry launched two brand new handsets this week, the Z10 and the Q10 and already some of our favourite brands are designing cases and accessories to ensure your sparkly new handsets are safe and stylish.

Here's our pick of the first few good-looking Z10 cases, expect more to come over the next few weeks...

Related: REVIEW: BlackBerry Z10 smartphone with BB10 operating system (Tech Digest)

Your Apple goods are already mighty pretty and shiny, but if you feel you could use some more sparkle then look no further. The Swarovski Crystallized range has covers both for the iPad and iPhone.

It's really a must-see accessory, the crystal backs for the Apple devices. The style is something called the 'Deco Den' trend of Japanese crystal mosaics.

The most frugal option starts at £25 for the 'Diffusion' range, going up to £170 for the 'Shiny' range. The relatively modest iPad accessories will set you back £58.

Available from www.swarovski-crystallized.com

Wheelie bags just got better. They are now also chairs and desks.

Walkin' Bags are the kind of thing Wallace & Gromit would invent, if they were real. It's a wheelie bag that can transform into a simple chair and a desk. Designed for the frequent traveller who is often having to balance things on their lap and stand around in queues, it just makes life a bit easier at stressful moments.

I'd like them to build a coffee dispenser and reading light into the next one...

There are different models of Walkin' Bags, but the JetCart model is $170.00 from WalkinBag.com
See more models on the site

Geeks, wear your geekdom more proudly: in rubbery casing on your gadgets as well as in your heart. Pull a tight Spiderman gelaskin over your iPhone or Pod and bring some superhero to your smartphone. Marvel have teamed up with GelaSkins using the legendary comic art to bring high-drama, sharp-coloured and quintessentially Marvell skins to Apple's tech. Knowing how tight Marvell are about copyright to their images, this is a coup for Gelaskins.

Here's a Spiderman beauty shot for the laydeez... check those forearms out hey.

Here's an original cover as an iPhone case:

And they do laptops skins too:

Fans are demanding Captain America, Wonder Woman on the comments section.
Purchase of a skin brings full access to the GelaSkins wallpaper archive letting you co-ordinate the background to match the skin too.

from $14.95 on GelaSkins.com

So, we finally got the measurements, and case makers have already got busy and there are at least two ranges out already that I've heard of.

The iPad poses an interesting dilemma for the casemakers - smartphones get tight-fitting skins, laptops get bags - what will the half pound, 10" iPad get? Looks like skins are winning so far. Protect that capacitive touchscreen with some tight fitting rubberised plastic or a sleeve or jacket that you can then slip in a rucksack or handbag.

Griffin Technology have already launched a "for iPad" range and as well as "sleeves" and "jumpers" they've also opted for an interesting "passport" style case which opens up like a book to reveal the screen (see full range here; pricing to be confirmed).

Wrappers are offering some funky textile cases:

I particularly like the black and white check one, though it's by Ralph Lauren so comes with a hefty £38 price tag. Full Wrappers range here.

I'm sure we'll get many more of these..

Exspect offered us 3 of their MiBag laptop bags to give away to our lovely readers and we were like, "yes for sure". MiBags are available in 13" and 17" options and they have interchangeable fascias, ie. coloured fronts that zip on and off and change the colour of your bag. The 15" bags sell for £34.99 and the 17" for £37.99. They have protective rubber feet and a protective sleeve plus two folder sections inside and a shoulder strap and locking front buckles.

Here they are:

Fancy the chance of winning one?
- Send an email to anna@shinymedia.com with MiBag Competition in the subject line and your name in the email.
We'll get in touch with the winners.
The competition will run for a week from date published.

For the full MiBag range from Exspect see their site.

If you find yourself unable to live without a Blackberry you might want to invest a little in keeping it safe from bumps and bruises, and there's no more luxurious way to do it than with a hand crafted leather purse from Violet May. Not for the faint of heart or the empty of pocket, these chic purses come equipped with individual mantras, a card and coin section and a stunning stingray print finish. You can opt for 'Rising Star', 'Yes we can!', and my favourite 'Never knowingly underdressed'. Enjoy!

£195 from Violet May

More cute cases here.

PPQ are known for pushing the boat out when it comes to blending technology with style (remember their to die for Sky boxes of last year?) and their latest creation takes note of the big buzzword in the tech field right now- netbooks. We love them so much here we've even given them their own sub-category in our computer field, and now you can tote yours around in a designer case. They've designed a deep red crocodile print bag for you to use, which features a velvet padded interior and a couple extra pockets for all your paraphernalia. It will cost£40 from Vodafone when you get a netbook on contract.

More cases and bags here.