Hi, I have an unlocked Australian iPhone and I am going to the UK for a holiday and want to put a UK SIM in my phone while I am there. Can I just put the new UK SIM and it will work or will i need to sync my phone with iTunes?
iPhone 4
All you have to do is pop the sim in and be on your way.
Enjoy your trip.
Great thanks
You're welcome.
Here's a list of supported iPhone carriers in the UK:
http://support.apple.com/kb/HT1937
A sim from any one of them will work just fine. You can purchase sims in airports & ask about coverage & deals.
Using UK SIM IN Australian iPhone
