iPhone 4 for Sale asap.. See Add. (possible swap and money for a 4s) ?

For sale, 16gb iPhone 4, with box. Excellent condition iPhone, always used a screen protector. The lock button is slightly more stiff due to use, but still works fine. The iPhone can be jailbroken if wanted (this should unlock it to all networks) but otherwise if unjailkbroken i believe it works on O2 or Tesco Mobile. *If you would swap an iPhone 4s for the iPhone 4 i would be willing to offer money aswell, the iPhone 4s MUST NOT have any scratches on the front screen though. The condition of the back is not a major issue for me.* The reason for sale is the fact im wanting to upgrade to a newer phone, this phone is still very good condition i am happy for people to have a viewing, or call me on 07881445224 if you have any questions regarding the iPhone. You can call anytime, day or night im not too fussed.. £250 But am very happy to hear reasonable offers. Cash or Swap on collection only, i WILL NOT post to nigeria. Thanks Nathan