Whether or not an au mobile phone is SIM-locked depends on when it was released.
For details, see below.
The SIM is not locked.
The iPhone 13 series (iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13, iPhone 13 mini), iPad (9th generation) and iPad mini (6th generation) released on September 24th, 2021, are SIM-unlocked.
These devices are SIM-locked at the time of purchase.
If you wish to unlock the SIM, a separate procedure is required. Click here to view the SIM-unlocking procedure (in Japanese only)
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