How to Register a New SIM Card on the iPhone

Written by emma nichols
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How to Register a New SIM Card on the iPhone
You can use a computer to register an iPhone's SIM card. (Jupiterimages/Brand X Pictures/Getty Images)

Most cellphones, including Apple's iPhone, require a SIM card to receive service. SIM cards are small cards inserted inside cellphones that identify the subscriber and hold information. SIM cards are pre-installed in iPhones, but sometimes need to be replaced due to damage or a new user. They can be easily registered before use with iTunes.

Skill level:

Things you need

  • iPhone
  • USB cable
  • iTunes

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  1. 1

    Straighten the end of a paper clip.

  2. 2

    Poke the small hole on the right side of the iPhone if using an iPhone 4 or the top if using an iPhone 3G or 3GS with the paper clip. A tray will open.

  3. 3

    Insert the SIM card into the tray and replace it.

  4. 4

    Open iTunes on a computer.

  5. 5

    Plug the appropriate ends of the USB cable into the iPhone and the computer. After a few seconds, the iPhone and a registration form will appear in iTunes.

  6. 6

    Fill out the registration form using the subscriber's personal information. After it is completed, your SIM card will have the subscriber's information stored and is ready for use.

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