Samsung galaxy ace swap for most things. please read ?

The phone has got a box and its on 02/giffgaff. I dont know if you can use any other sim cards because all i use it 02 and giffgaff... Its got a few wear and tear as you would expect from everyday use. I just want a different phone because I cannot keep using the same phone all the time lol. Anyways im open to all offers. Please let me know what you have and il get back to you ASAP. I will consider every phone with or without a box, just try me and you never know. I am also interested in ipod touch 4th gen, tablets (running android 4) etc.. Email or Texts only please, no calls as i may be busy and will not be able to pick up the phone. BY THE WAY I AM NOT SELLING THE PHONE FOR 20