Information about SIM Card
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)/eSIM with another company's mobile phone
Please follow the below link for procedures and important considerations when using an au IC card/eSIM 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.
- SIM : Subscriber Identity Module
- 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.
What is an eSIM?
An embedded SIM which uses downloaded profile data. Since line opening procedures are available online, your mobile phone will become available without waiting.
