① When You Receive Your SIM Card

Simply insert the SIM card into your phone to start using:
📞 Voice Calls
📨 SMS

✔ Wi-Fi and Mobile Data settings do not affect voice or SMS service.

② Do NOT Configure APN Outside Japan (Important)

❌ iPhone: No configuration profile is required.
❌ Android: No APN setup is required.

📍 APN settings are only required when using mobile data (1–50GB) in Japan.

③ Dual SIM Settings

If your phone has two SIM cards:

✔ Select the SIM you want to use for mobile data.
✔ It is recommended to turn off Automatic Mobile Data Switching.

👉 This prevents your phone from switching to the SIM that cannot access the internet.

④ If the SIM Doesn’t Work

Please try the following first:

1️⃣ Update your phone to the latest system version (VoLTE support is required).
2️⃣ Remove any APN settings (do not configure APN outside Japan).
3️⃣ Turn Airplane Mode on and off to reconnect to the network.
4️⃣ Restart your phone.

⑤ Still Not Working?

👉 Please test the SIM card in another phone (your spare phone or a friend’s phone).

✔ Works in another phone → The issue is with your phone settings.
✔ Doesn’t work in any phone → The SIM card may be defective (we can arrange a replacement).
✔ If the issue is due to device compatibility → We can assist with a return or refund.