How to save all my data to the handset rather than the SIM?
I'm changing my O2 SIM card to a giffgaff SIM card and I was told to make sure to save all data and contacts to the phone so when I change SIM cards I don't lose anything. I have an iPhone 4. How do I do this?
I'd appreciate any tips or step by steps for things to consider when you're changing SIM cards in the same phone and keeping the same number.
Any help would be really useful!