I have to recommend these guys as I got a great deal and everything went very smoothly. I was looking for an iPhone 6s 64 GB, preferably with Vodafone, O2 or EE. I needed up to 4 GB data per month. Looking at the websites of these providers the cheapest I could find would come to a total cost of £1000 - £1200 for two years contract (for both the handset and the contract with the network). I even looked at buying the handset (£619) from Apple and getting a sim only deal, but it still came to minimum £950 and that was with an random network I hadn't heard of (ID) so I didn't want to take the risk. Then on a comparison site I saw a deal for £31 per month, plus £100 upfront with O2. This came to £844 for 2 years, it seemed to good to be true! Only "catch" was that this deal was only for the Space Gray model but I was fine with that. I called them to check if it was real and indeed it was. The lady was very helpful and so I went with the deal. This was around 4pm, and I received the phone by courier at 2.30pm the next day. I called O2 to switch my previous number (also O2) to this new handset/sim and within 4 hours I was all set up and running. (I was on PAYG so had no contract) I can only recommend e2save as their prices were so much lower than anywhere else. If you're willing to haggle you may be able to get as good a deal with your network but I am no good at that so this saved me the effort! :)