The highly anticipated iPhone 6S Plus has been released, and it's packed full of new and improved features, making it a substantial step up from last year's already impressive iPhone 6 Plus.

With Apple announcing that pre-orders for the iPhone 6S Plus will go live on Saturday September 12 in preparation for the release date of September 25, networks have already begun announcing what deals they'll be offering on Apple's new phablet, so where can you get one from, and how much will it set you back?

SIM-Free

As usual you'll be able to buy the iPhone 6S Plus from Apple's online store, and although you might not get such a tempting offer from the official store, it could be your best bet when getting your hands on the brand new device.

The iPhone 6S will launch at the same price as the iPhone 6 did last year, so for the 16GB variant you'll be splashing out £539, with the 64GB version costing £619 and the 128GB version weighing in at £699.

Apple also announced an upgrade program through the Apple Store that will let you upgrade to a new iPhone every year for $32 a month in the US - though no mention was made about the service coming to the UK.

EE

EE informed its customers on Twitter that it will be stocking the iPhone 6S Plus, and you'll be able to get it on contracts with Wi-Fi Calling and 4G+ thrown in as well.

Vodafone

Vodafone has confirmed that both the iPhone 6S and iPhone 6S Plus will be available on the network, and will come with access to its ultrafast 4G network - and for the first three months of your contract you'll have no limits on the amount of data you use.

O2

O2 will be stocking the iPhone 6S Plus, and you can register for updates on information on when the pre-orders kick off on the official O2 website.

If you're looking to swap your existing phone for an iPhone 6S Plus, then O2 is running its O2 Recycle scheme and will offer customers from any network prices for their handsets.

If you have an iPhone 6 Plus you can get £310 for the 16GB version, £350 for the 64GB and £370 for the 128GB version.

If you're swapping out the smaller iPhone 6, you'll get £280 for the 16GB version, £315 for the 64GB capacity and £330 for the 128GB version.

A 16GB iPhone 5S will net you £160, while the 64GB version will go for £185.

You can also swap out non-Apple phones as well, such as the Sony Xperia Z3+ (which will give you £175), while the HTC One (M8) will pay out £115.

Three

Three has also announced that it will be offering the new iPhone 6S and iPhone 6S Plus handsets, and you'll be getting 4G data at no extra cost.

No further pricing structures have been announced so far, but you'll be able to phone, text and use data in 18 countries (including the USA, France, Italy, Spain and Australia) without any roaming charges.

Virgin Media

Virgin Media will be offering the iPhone 6S Plus to its customers, and it will be available in the coming weeks, though no additional information was provided just yet.

Carphone Warehouse

We've had work that high street retailer Carphone Warehouse will be stocking the iPhone 6S Plus, along with the iPhone 6S as well.

Currys PC World

With the Currys and PC World stores being owned by the same company as Carphone Warehouse, it's little surprise that these shops will also be stocking the iPhone 6S Plus, though no prices have been announced so far.

• Fancy something smaller? Here's where you can get the regular iPhone 6S

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