O2 has announced that it will launch its 4G LTE mobile network on 29 August, becoming the first competitor to EE to roll out the service in the UK.
EE became the UK's first 4G network in October 2012, after Ofcom allowed it to use its existing 1,800MHz spectrum for 4G service.
Since then the UK's other networks have been racing to catch up, purchasing their own spectrum in an Ofcom auction in February.
O2's parent company Telefonica paid about £550m for its 4G license, which will use the 800MHz spectrum.
O2's LTE service will initially only be available in Leeds, Bradford and London, though it plans to extend that coverage to 10 more cities by the end of 2013. It said about 5 million people will be covered at launch, with 2 million more added every week.
The network will offer much higher data transfer speeds that 3G, though it will be limited to certain handsets - not including the iPhone.
It has been known for months that O2's network would not be compatible with Apple's flagship handset, though the company's CEO Ronan Dunne said he would be "gobsmacked" if the issue was not addressed by future Apple products.
It is also likely that in some areas where EE has been able to install upgraded equipment O2's 4G speeds will lag behind its competitor's.
O2's lowest tier 4G tariff will cost £26 a month, compared to £21 a month for EE's lowest basic rate for voice and data - though it's not known exactly what will be included in those prices.
O2 said 4G customers would be given "free music content" for 12 months - though what that entails isn't clear.
However, O2 has confirmed that like EE it will offer no "unlimited" plans, disappointing users who use large amounts of data - or would, if they had the option.
The other UK networks are expected to launch their own 4G services later this summer.
In a statement Ronan Dunne said:
"It’s great that I am able to announce O2 4G the day after the spectrum has been cleared for use. Digital connectivity will be made ubiquitous by 4G and become the oxygen of modern life. It is our intention to use 4G to inspire the nation through the possibilities of technology, encouraging people to live more, do more and be more with O2. “The full potential of 4G is as yet unexplored, but what we can be sure of is that it will allow for a whole new world of opportunity that people are now ready for. Over half of our customers say they use more data than two years ago and even more use wifi wherever they go, to always stay connected. Given this trend, there is no doubt that 4G will transform our lives, be it as consumers, in business or through public sector services.”
With the same ultra-clear Retina display as the iPhone 5, but now with an <a href="http://www.huffingtonpost.co.uk/2013/09/10/iphone-5s-uk-pictures-release-date_n_3898775.html?1378818683&utm_hp_ref=uk-tech" target="_blank">added fingerprint sensor</a>, a seriously impressive 64-bit A7 chip, an improved camera and a new gold design option, this is the best iPhone ever made. And with its consistent market-leading app selection, easy-to-use OS and delightful design, it's hard to argue against it being one of the very best gadgets ever made too.
Google LG Nexus 5
The new Nexus 5 is based on the internals of the LG G2 - which means you get the same Snapdragon 800 processor, as well as the full version of Google's new Android 4.4 KitKat OS, which integrates SMS messages into Hangouts, freshens up the design and adds new features under the hood. The camera is still a little lacking, while the design is functional rather than beautiful, but at £299 off contract it's still a steal.
Samsung Galaxy Note III
The Note III is huge. It's got a 5.7-inch screen, though with the same 1080P resolution as the Note II. It adds a new leather back panel, which gives it an 'office' feel in line with the productivity-plus-stylus theme of the device. It also adds a Snapdragon 8000 quad-core processor, some new software enhancements and a few new S-Pen functions into the mix. If you're looking for a giant note-taking phone, this is still your best bet.
The 5C was rumoured to be Apple's 'budget' iPhone. It isn't - and not only because it isn't that cheap. The "proudly plastic" 5C comes in five colours (see what they did there) <a href="http://www.huffingtonpost.co.uk/2013/09/10/iphone-5c-uk-pictures-release-date_n_3899557.html?utm_hp_ref=uk-tech" target="_blank">but has the same internals, screen and camera as the iPhone 5.</a> It's essentially the same beautiful, high-end phone you already know and love, in a more colourful (and potentially divisive) design. As such it's hard to see how Apple won't sell a billion of them.
Samsung Galaxy S4
Though the S4 i<a href="http://www.huffingtonpost.co.uk/2013/04/24/samsung-galaxy-s4-review-_n_3145186.html?utm_hp_ref=uk-tech" target="_blank">s in some ways an evolutionary upgrade over its wildly successful S3</a>, it's an extremely attractive, lightweight and high quality phone with a 5-inch HD screen, the fastest processor ever seen in a phone and <a href="http://gdgt.com/samsung/galaxy/s/4/" target="_blank">some interesting new features</a>, including a measure of 'eye tracking' controls and gestures that don't require you to touch the screen.
The HTC One is probably the most beautiful smartphone on the market - and is also the most intelligently designed. With twin, front-facing speakers it's the best choice for watching movies, and its 4MP 'Ultra Pixel' camera punches above its meagre pixel-count suggests.
Sony Xperia Z1
Sony's new flagship smartphone is an evolutionary development of the also-excellent Z. It keeps the same screen, the waterproof design and the nicely-tweaked version of Android, while upping the processor performance, improving the camera and smoothing out the rough (or rather sharp) edges of the Z's blocky design.
Nokia Lumia 925
<a href="http://gdgt.com/nokia/lumia/920/" target="_blank">The Nokia Lumia 925</a> has the same great design and attention to detail we've come to expect from Nokia, but with some crucial upgrades from the 920 including a thinner, all-metal design and an improved camera.
The LG G2 is an extremely high-end 5-inch, 1080p Android 4.2.2 smartphone whose major distinguishing feature is that it has three buttons on the back of the device, which are normally found on the sides. The G2 has its camera button and volume rocker on the rear, which for many people is enough to justify the purchase alone. It also has excellent battery life for this class of device.