Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

It is possible to use it with 4G/5G, but 5G SA network usage is not possible.

To use 5G SA network, you will need to change to a 5G SA contract and change your SIM card.

Procedure

You will need to do the procedure at an au Style / au shop / UQ spot. Please note that a fee of ¥4,950 (including tax) will be charged for this procedure.

Click here to search for au Style / au shop

Click here to search for UQ spot (in Japanese only)
Please bring your current SIM card, the device you wish to use, your personal seal (inkan), and an identity verification document when you visit the shop.

Click here for more information regarding identity verification documents (au) (in Japanese only)

Click here for more information regarding identity verification documents (UQ mobile) (in Japanese only)
If you wish to switch to eSIM, please check the following pages.

eSIM: Click here for procedures for upgrading your model, reissuing eSIM, and transferring eSIM (au) (in Japanese only)

Click here for procedures on reissuing, and transferring eSIM (UQ mobile) (in Japanese only)

Can I use au SIM card with a SIM-free or used smartphone?

You cannot use it. You will need to change to a 5G SA contract and change your SIM card.

Procedure

You will need to do the procedure at an au Style / au shop / UQ spot. Please note that a fee of ¥4,950 (including tax) will be charged for this procedure.
Click here to search for au Style / au shop
Please bring your current SIM card, the device you wish to use, your personal seal (inkan), and an identity verification document when you visit the shop.

Click here for more information regarding identity verification documents (in Japanese only)
If you wish to switch to eSIM, please check the following pages.

eSIM: Click here for procedures for upgrading your model, reissuing eSIM, and transferring eSIM (in Japanese only)

Can I use au SIM card with a SIM-free or used smartphone?

No, it cannot be used. You will need to change to a 5G contract (change of plan).

Important note

eSIM reissuance or transfer via My au (Web) and My UQ mobile (Web) are free of charge.　

The handling fee at au Style, au shops, or UQ spots is 4,950 yen (including tax).

Procedure

Procedures must be completed at au Style / au shop.

Click here to search for au Style / au shop
If you wish to switch to eSIM, please check the following pages.

eSIM: Click here for procedures for upgrading your model, reissuing eSIM, and transferring eSIM (in Japanese only)

Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

Operation is not guaranteed. Please change to a 5G/VoLTE contract and the SIM card before using.

Procedure

You will need to do the procedure at an au Style / au shop / UQ spot. Please note that a fee of ¥4,950 (including tax) will be charged for this procedure.

Click here to search for au Style / au shop

Click here to search for UQ spot (in Japanese only)
Please bring your current SIM card, the device you wish to use, your personal seal (inkan), and an identity verification document when you visit the shop.

Click here for more information regarding identity verification documents (au) (in Japanese only)

Click here for more information regarding identity verification documents (UQ mobile) (in Japanese only)
If you wish to switch to eSIM, please check the following pages.

eSIM: Click here for procedures for upgrading your model, reissuing eSIM, and transferring eSIM (au) (in Japanese only)

Click here for procedures on reissuing, and transferring eSIM (UQ mobile) (in Japanese only)

Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

It is possible to use it with 4G, but you cannot use the 5G network.

Can I use au SIM card with a SIM-free or used smartphone?

No, it is not possible. A plan change for the smartphone will be required.

Important note

eSIM reissuance or transfer via My au (Web) and My UQ mobile (Web) are free of charge.

A fee of ¥4,950 (including tax) will be charged when you complete the procedure at an au Style, au shop, or UQ Spot.

For VoLTE/5G compatible smartphones

Procedures must be completed at an au Style / au Shop.

Click here to search for au Style / au shop
To change from 4G (VoLTE) to 5G, you can also do the procedure at the customer center.

Contact us

Business hours

From 9:00 a.m. to 8:00 p.m. (open all year round)

For 5G SA compatible smartphones

You must change to a 5G SA contract and reissue your SIM card.
You will need to do the procedure at an au Style / au shop.

Click here to search for au Style / au shop
Please bring your current SIM card, the device you wish to use, your personal seal (inkan), and an identity verification document when you visit the shop.

Click here for more information regarding identity verification documents (in Japanese only)
If you wish to switch to eSIM, please check the following pages.

eSIM: Click here for procedures for upgrading your model, reissuing eSIM, and transferring eSIM (in Japanese only)

Can I use au SIM card with a SIM-free or used smartphone?

You can use it by completing the necessary procedures.

For details on the procedure for using an au IC card with a mobile phone from another carrier, please refer to the following page.

Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

When using a 5G SA-compatible device with a 5G contract

Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

Procedure

When using a 5G SA-compatible device with a 4G (VoLTE) contract

Can I use au SIM card with a SIM-free or used smartphone?

Procedure

When using a 5G compatible device with a 4G (VoLTE) contract

Can I use au SIM card with a SIM-free or used smartphone?

Important note

Procedure

When using a 5G/VoLTE-compatible device with a 5G SA contract

Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

Procedure

When using a VoLTE compatible device with a 5G contract

Can I use au / UQ mobile SIM cards with a SIM-free or used smartphone?

When using a smartphone with a 4G (VoLTE) feature phone plan

Can I use au SIM card with a SIM-free or used smartphone?

Important note

For VoLTE/5G compatible smartphones

For 5G SA compatible smartphones

When using a mobile phone from another carrier

Can I use au SIM card with a SIM-free or used smartphone?