How to Use a US iPhone on Vodafone
- 1). Bring the iPhone to any Vodafone retail location (see Resources). Vodafone has locations in many countries, including the UK, Australia, India, Greece and Qatar.
- 2). Inform the representative that you would like to purchase a Vodafone SIM card to use with your device. Ask him to make sure the SIM card allows for use of Vodafone's cellular data network on your device.
- 3). Insert an unfolded paper clip into the hole at the top of your iPhone and push gently until the SIM tray pops out. Remove your US SIM card and store it in a safe place. Insert the Vodafone SIM card face done and replace the tray. Wait until the Vodafone name appears in the top left corner of the iPhone and begin using the device.
- 4). Visit any Vodafone store -- or certain convenience shops and grocery stores, depending on your city -- to purchase more credits whenever you run out.
Source...