If you are with Tesco mobile read this.
My partner got a call from a Chinese woman saying she was from Tesco Mobile. She knew all of Mo's details except her bank details so it looked legit. She went on to say Tescos will send a new I-phone today as her phone was being phased out. It arrived today but I decided to pay Tesco a visit. Good job I did as it is a crafty scam. They say if you don't want the phone just give us a ring and we'll tell you where to send it. Tesco said it goes to an address where £1000 worth of phone would disappear. I am back to Tesco tomorrow to hand the phone in and they will deal with it. So if any of you are with Tesco Mobile, beware...