***EDIT****DEAL EXTENDED TO BLACK FRI WEEKEND!

iPhone 6S 64GB | O2 4G | £100 Off Using Black Friday Code BLACKNOV15 | Unlimited calls and texts | 3GB data | £31 P/Month

£175 for handset, using £100 off code brings the handset cost down to £75 upfront, + 24 months x£31 = £819.

Please be aware that Apple handsets will lock to the network of the first SIM card that's inserted into them.
- rodman

For other colours see:
http://www.techradar.com/news/phone-and-communications/mobile-phones/iphone-6s-deal-save-100-on-a-64gb-iphone-6s-with-black-friday-voucher-code-1308542
www.quidco.com/mobiles-co-uk/
- Youngy

If you have an old phone to recycle, use this link to order this deal which gives you an extra £50 when recycling your old handset.

I've already had my phone dispatched and received my £50 code, will give me £150 for my old iPhone 5 which is better than eBay and seems less faff!

http://www.mazumamobile.com/mobilescouk-bonus.php
- vidic007007

Need to call customer services?
Don't call the 0871 number, call this:
01509 615474
- preecey

The Three SIM unlock trick does NOT work. Do NOT insert a Three SIM in first expecting it to unlock the phone.
- preecey

Thanks to wildturkey for this extra data info..............

Just got info from O2 online chat to confirm that you can upgrade the data to change your monthly tarrif to
5gb - £34
10gb -£39
20gb -£49
Once upgraded, you can downgrade back down to your base tariff of 3gb whenever you like if you change your mind.
Great deal

****EDIT*****

Update: This deal has been extended and will run up until the end of the Black Friday weekend. However, we understand there's a chance it may be pulled depending on stock (Gold is temporarily out of stock), due to the sheer popularity of it.
- Herby247