Iphone 4 32GB locked to o2 -

Hi selling my iPhone 4 32gb. I has been repaired due to water damage, new battery fitted, still has griffin screen protector fitted and will come with new charger/cable/headphones no box though. It does have a weak wifi antenna but that is the only issue. it should work with GiiGaff so for a 10 a month you will get 250mins calls, unlimited texts and unlimited internet. No offers or swaps.