Please follow the below link for procedures and important considerations when using an au IC card (SIM card)/eSIM with another company's mobile phone.
Make sure to read and understand the information below in "Important considerations regarding usage of non-au mobile phones", and visit your nearest au Style / au shop for details about procedures if necessary.
When making a new contract, you will be required to present the necessary documentation and pay a contract processing fee of ¥3,300 tax included.
If the au IC card needs to be changed, customers will need to bring their current au IC card with them. In this case, an au IC card replacement fee of ¥2,200 tax included will be charged.
A separate procedure is required to change au IC cards to eSIM. Carrying out the procedure in-store incurs a charge of ¥2,200 tax included. Reissuing using the My au app iccurs no fee.
*If changing au IC cards to eSIM, perform procedures on My au app.
*Internet connection via "LTE NET" has been available on non-au Android mobile phones since June 1, 2019.
Check the link below for information about access point settings.
Customers with non-au profiles (APN) can delete these profiles through the following procedures.
Deleting APN configuration profiles
*Application for "Network setting options" (free) is required if au is used on iPhone 7, iPhone 7 Plus, iPhone SE, iPhone 6s, iPhone 6s Plus, iPhone 6, and iPhone 6 Plus.
Click here to apply (in Japanese only)
With regard to rate plans, discount services, etc., the same fee structure used for au mobile phones is also used for all non-au mobile phones. Please note that if you are not signed up for a data (packet) flat-rate communication service, you may experience unexpectedly high packet communication fees. It is therefore strongly recommended that you sign up for a data (packet) flat-rate communication service. Also, please note that the LTE Single (data communication terminals, tablets, etc.) rate plan and discount service is not available to non-au mobile phone users.
Repairs and other after-sales services for non-au mobile phones are not handled by au. For information on how to handle repair issues, contact the company from which you purchased the device.
Except in cases of willful or gross negligence on the part of au, au shall bear no responsibility for any loss, damage, or trouble that may result from using an au IC card/eSIM in a mobile phone or other device sold by another company.