Free Samsung U100 v.slim 5.9mm mobile on Orange 18mth 500mins/500sms 18months free line rental via cashback
Free Samsung U100 on Orange 500minutes and 500sms on Dolphin 35 £35/month 18x£35 = £630 must be paid to Orange over 18months and reclaimed back from TMO over 5 claims of £126 each at 300days, 350days, 410days, 460days, and 540days into the contract with appropriate vouchers which I recommend you planning out as suggested in the link below with the vouchers they provide, NOT planning and administrating this cashback correctly could resulting in leaving you several hundred pounds OUT OF POCKET!!!
Going via quidco = £30 profit too.
Also getting this entitles you to Orange Broadband (12month minimum contract applies but 2gb tariff is free so long as you have a £30+/m Orange Mobile Contract):
2gb limit (usb modem): Free
Unlimited (Livebox giving free international landline calls to UK and 100 countries): £5 per month charged seperately
Edit: That should read free 2gb tariff broadband on 18month £30+/m Orange Mobile Contracts
The above description should say 500mins/3000sms not 500mins/500sms a month.