Archives FAQs

【Voice SIM】Quick Start Guide

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.

What should I do if I cannot scan the QR code on my own phone after issuing it from my phone?

🅰️【【Settings】➡【Mobile Services】➡【Add eSIM】➡【Use Mobile Barcode】➡ Scan the QR Code

➀Take a screenshot of the QR code and send it to another device so you can scan it with your phone.

②Print the QR code so you can scan it with your phone.

③Select【Manual Input of Details】and copy the【SM-DP+ address】and【Activation Code】from the【eSIM Activation URL】. For detailed instructions, please refer to the 👉 Instructions Before Use & Set up the APN

Why can’t the eSIM be fully activated while outside of Japan?

🅰️Our eSIM uses the local docomo mobile network in Japan, so it can only receive the signal after entering Japan. Once the signal is received, it will automatically activate immediately.

【Note】Most of the eSIMs currently available on the market are international roaming eSIMs sold by telecom companies from various countries in Taiwan. This is why they can be set up before traveling abroad, and you need to turn off roaming while outside Japan and enable international roaming after arriving in Japan. Since our eSIM is a local product for Japan, you do not need to enable roaming.

Can the QR for activating eSIM be issued in advance overseas?

🅰️Yes, it can be done.
As long as you’re in a place with internet access, you can issue it. Since the issuance takes about 15 minutes, if you’re concerned about not being able to connect to the free Wi-Fi at the airport or other places in Japan, it’s recommended to issue the QR code in advance in Taiwan.

📢【Important Note】Once the QR code is issued, even if it’s not used, the validity period will automatically start counting from the 3rd day after issuance. Therefore, please make sure your travel plans are confirmed before issuing it, and do so before your departure. If there are any changes to your itinerary, you can keep the QR code unused for later use, as long as it hasn’t been issued.
*The time reference is based on Japan Standard Time.