Not sure how much of a surprise this will be to most people, but if you take a look at the iPhone FAQ section on Appleâ€™s UK site, youâ€™ll notice that it says that the iPhone 4 micro-SIM canâ€™t be used in the iPad.
V3.co.uk reports that Nick Wilkins, press relations manager at O2, told them that if you place an iPhone 4 micro-SIM in an iPad, the SIM will not work.
â€œThe micro-SIMS for the iPhone are set up to allow voice calls, SMS messages and data functionality, whereas the iPad micro-SIM is provisioned to allow pay-as-you-go data transfer only,â€ Wilkins told V3.co.uk.
So, anyone hoping to switch micro-SIMs between the two and share data allowance, for example, will be disappointed. If you just want to revert your micro-SIM to your old phone that uses a standard SIM, according to V3.co.uk, O2 has said that this will be possible using their supplied adaptor.