Hi, I recently took out a contract with BT Mobile for a new Samsung S6. When I turned the new phone on for the first time on November 4th I discovered an old text message from August 16th from Tesco Mobile saying welcome and they were about to send details on how to transfer my contacts, emails etc. On further investigation it looks like a new sticker has been put over the one that seals the box it came in. Is BT using 2nd hand phones and phobbing them of as new? Or have they bought some of tesco stock? What do I have an old message from Tesco mobile?