Iphone 4 16gb white on orange network ?

I am selling this phone as i have got an upgrade. Its in good overall condition with no real scratches on either side, i wouldnt say its totally mint but not far off. The phone does have a couple of issues, the wifi signal is not very strong, although this might just be my broadband. The other issue is the front facing camera does not work, the main camera does work but if you try to go to facetime in will freeze both cameras, this may be a cheap fix but it never really bothered me much. £150, with no offers, cash only. Thanks for looking.