Information about SIM Card

Using another company's SIM card with au mobile phone

Using another company's SIM card with au mobile phone

Before proceeding, you must ensure your au mobile phone has been SIM-unlocked.

Using an au IC card (SIM card) with another company's mobile phone

Using an au IC card (SIM card) with another company's mobile phone

Please follow the below link for procedures and important considerations when using an au IC card with another company's mobile phone.

  • * Before proceeding, you must ensure the other company's mobile phone has been SIM-unlocked. For specifics about whether the other company's mobile phone can be SIM-unlocked, what communication standards it is compatible with, what frequency bands it can utilize, how to perform unlocking, etc., please contact that company directly.

What is a SIM card?

SIM *1 card is an IC *2 card which contains a unique ID number to specify the phone number and au uses the name “au IC card” for their SIM Cards.

  • *1 SIM : Subscriber Identity Module
  • *2 IC : Integrated Circuit

There are 3 sizes in SIM card – standard, micro and nano.
The shape of SIM card differs depending on the device/phone. Please confirm the correct card for the device/phone you are using.

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