My iPhone 4S was replaced under warranty on 4th March by the Genius bar due to a faulty volume switch. Starting exactly on that date, my phone bill is showing text messages being sent to one the following numbers (UK numbers as I am in the UK) every few day and sometimes several times a day: 07860015000 07860015001 07860015002 07860015003 In the past month according to my bill, my phone has sent messages to these numbers 30 times. However, none of these show in the messages app on the phone, and do not belong to any of my contacts. After Googling the numbers, i managed to find this page saying that one of the numbers belongs to Apple and the phone sends a secret message to it when you set up iMessage for the first time. Makes sense, and since the numbers are all sequential, I presume they are all used for this purpose. Looking through past bills, I can see the original phone only sent to these numbers once, which was the day i activated iMessage. So the question is, why is the replacement phone constantly sending messages to these numbers? Can it be something to do with the fact that it was a replacement phone and it was restored from a backup of the previous phone? It's not a huge concern at the moment as my plan has something stupid like 2000 inclusive text messages, however I will be going abroad in about a month where I will obviously be getting charged for these messages, so need to find a fix for this. Anyone else had this issue?