Hi, I've been sent a new SIM by O2 due to a change in my mobile tariff, Pay Monthly -> Pay As You Go. I have an iPhone 1st generation from April 08 And as of writing this, I was just about to take a pic and iPhone 3.1.3 decides to install, but this is something I've noticed: both SIMs are slightly different. The older card has a bigger chip, smaller one has a smaller chip. Anyone know the reason for difference in size? Anyway, whenever I put the phone into airplane mode or even reboot it, the phone asks me to connect to iTunes. Today, it happened in the most inconvenient place just before I was to make a call. On connecting to iTunes, I have to agree to the terms and conditions before it activates the device. iTunes then tells me that the iPhone has been successfully unlocked. Any ideas?