Hi, Just on iTunes with my 16gb 3G connected. I've just filled in my address and email. 1/ Now I need to fill in iPhone Number. Sounds stupid I know but what it mean/where do I find it? I've just got this phone from my Father's business, from o2 and the sim card just came in a box therefore if the 'iPhone number' means mobile number, I don't know it! Please help a noob out. Thank you.