My iPhone is not working in my country after I've used Japan Prepaid SIM.

If you installed our APN profile on your iOS device, you have to remove / uninstall it.

You go to Settings > General > Profile and you can remove our APN profile from there.

You can also check our uninstall guide page:

In case you need to set a specific APN (Access Point Name) for your original SIM, then please contact your original carrier.

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