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Can I use an au/UQ mobile SIM card in a SIM-free or used smartphone?

Can I use an au SIM card in 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

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

It cannot be used. You will need to change to a 5G SA contract and change your SIM card.

Procedure

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

 It cannot be used. You will need to switch to a 5G contract. 

Procedure

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

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

Procedure

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

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

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

It cannot be used. To be able to use this service, you must complete the following procedure.

For VoLTE/5G compatible smartphones

  • A change to the smartphone plan is required.
  • Procedures must be completed at an au Style/au Shop.
  • If you wish to change to 5G or 5G SA, a fee of 3,850 yen (including tax) will be charged for the procedure.
  • To change from 4G (VoLTE) to 5G, you can also do the procedure at the customer center.

Contact us

For KDDI Customer Center
click here
For UQ mobile Customer Center
click here

Business hours

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

UQ: from 10:00 a.m. to 7:00 p.m. (open all year round) 

For 5G SA compatible smartphones

Can I use an au SIM card in 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.

Click here for details on procedures when using a mobile phone from another carrier (in Japanese only)
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