Went in to the Teesside Retail Park branch to buy a I phone 5 for my step daughters birthday, she lives in the Ukraine. Explain to the assistant that this phone would only be used in the Ukraine and would it accept a Ukrainian sim card. I was told that it was unlocked, would work anywhere in the world and would accept this sim card. So I bought the phone and put it away until we went to visit her in the Ukraine in September 2016. Her birthday arrived the phone was charged and the sim was inserted, only the phone would not accept this sim. She took the phone to a local phone shop and they inserted several new sim cards and none was accepted by the phone. The phone shop did some investigation and told her that it appeared that this phone would work ok in the UK but outside the UK it was locked to O2. Returned with the phone to the UK and went back to the Carphone Warehouse branch where I had purchased it from. Explained to the manager the problem he inserted a UK sim which worked in the phone, which was great but it was intended to work not in the UK. The manager told me that he would have to contact his Head Office which would take a week, nearly three weeks later and no has contacted me. Sent them a recorded delivery letter explaining the situation and asking for a refund, heard nothing from them. I am now going down the line of the small claims court and guess what I received a letter some seven weeks after my recorded delivery letter informing me that they would carry out an initial investigation and would be in touch in the near future. To date I have heard nothing else from them. If you want honest advice and great customer service then give this lot a wide berth.