🅰️ No, you do not.

The Personal Hotspot name (Wi-Fi name) and password are based on the smartphone device settings, not the SIM card settings.

Therefore, regardless of how many SIM cards or eSIMs are installed on your phone:

✔ The Personal Hotspot name and password are shared device settings and do not need to be configured separately.

⚠️ The setting that needs to be configured individually for each SIM card or eSIM is the Personal Hotspot APN.

🅰️ Yes, you can.
We recommend completing the APN settings before departure, so you can use the Personal Hotspot function immediately after arriving in Japan.

⚠️ However, our SIM/eSIM products use Japanese local mobile networks and are not international roaming products. Therefore, they cannot connect to the Japanese Docomo network while you are outside Japan. Even if the APN settings have been completed, you will not be able to confirm whether the settings are successful or test the Personal Hotspot function overseas.

📌 In short:
✔ You can set up the APN before traveling.
✔ You can use it after arriving in Japan.
❌ You cannot test whether the APN settings are working while outside Japan.

This is a normal situation. Please test the connection after arriving in Japan and connecting to the mobile network.

🅰️ Please check the following items first:

① Confirm that the APN is set for the correct SIM/eSIM

If your phone uses multiple SIM cards or eSIMs at the same time, the most common issue is that the APN was set for the wrong SIM card.

Please confirm that the SIM/eSIM currently used for Mobile Data is the same SIM/eSIM where the APN settings were entered.

② Restart your device after completing the settings

After completing the APN settings, please restart your phone once and test the Personal Hotspot function again.

③ Recheck the APN information

Please carefully verify the following information:

✔ APN
✔ Username
✔ Password

Make sure all settings exactly match the information provided in the instruction manual.

⚠️ Important Notes

Due to the wide variety of smartphone brands, models, and operating system versions, the settings screens may differ depending on the device. Therefore, we cannot guarantee that the Personal Hotspot function will work on every device.

However, as of now, we have not received any cases where the Personal Hotspot function could not be used due to an issue with the JB SIM/eSIM itself.

🍎 iPhone (iOS)

📌 Turn on Personal Hotspot:
【Settings】 ➡ 【Personal Hotspot】 ➡ Turn on 【Allow Others to Join】
You can then share your mobile data connection with other devices.

📌 Change Wi-Fi Password:
【Settings】 ➡ 【Personal Hotspot】 ➡ 【Wi-Fi Password】
Enter a new password and save the settings.

📌 View or Change Wi-Fi Name:
【Settings】 ➡ 【General】 ➡ 【About】 ➡ 【Name】

This device name will be displayed as the Wi-Fi hotspot name when other devices search for available networks.

🤖 Android

※ The operation interface may vary depending on the brand and model. The following example uses Samsung A55.

📌 Turn on Personal Hotspot:
【Settings】 ➡ 【Connections】 ➡ 【Mobile Hotspot and Tethering】 ➡ Turn on 【Mobile Hotspot】

You can then share your mobile data connection with other devices.

📌 Change Wi-Fi Name or Password:
【Settings】 ➡ 【Connections】 ➡ 【Mobile Hotspot and Tethering】 ➡ 【Mobile Hotspot】

📌 Tap 【Network Name】 or 【Password】
to enter the settings page and modify the hotspot name and password.

🅰️ Yes, it’s fine.
Since our company’s SIM card is a product from a Japanese telecom provider and not an international roaming type, it will not be activated when inserted into the phone outside of Japan, as it won’t be able to receive the docomo signal from Japan.
To avoid forgetting the SIM ejector tool when traveling abroad or accidentally losing the SIM card while out, we recommend inserting the SIM card into the phone ahead of time.
For dual-SIM phones, typically the SIM card you’re using is inserted in the SIM1 slot, so you can insert the Japanese SIM card into the SIM2 slot as a backup.
※The SIM card will display “No Service/Unknown Number”.

🅰️Since physical SIM cards do not provide online real-time data usage checking services, you need to use the statistics feature on your phone or tablet. Please refer to the “How to check your mobile data usage“

🅰️📢The 6/8/16/31days unlimited SIM cards cannot be extended or topped up. The fixed data SIM cards can have their validity period extended or additional high-speed data added. Please refer to the 🛒SIM_recharge/extension

※Make sure to purchase the extension or top-up products online within the validity period.

※If it is within 7 days after the validity period has expired, top-ups are possible, but the remaining data will be reset to 0.

※Please use your phone or tablet’s statistics feature to check your data usage. Refer to “How to check your mobile data usage”

• You can top up or extend within the validity period.
• Remaining data and newly added data are treated the same; there is no usage priority between the two.
• There is no limit to the number of top-ups or extensions.
• If you top up within 7 days after the expiration date, the data balance will be reset to zero, but you can continue using the original eSIM or SIM card.
• The extension period is calculated from the 2nd day after the original expiration date, which is considered the first day of the new validity period.
• After purchase, in addition to receiving an email with an electronic receipt, you will also receive a separate activation notice from our company via biz@jbrg.jp.
• You may request a cancellation before receiving the activation notice. However, a 5% processing fee will be deducted to cover credit card company fees.
• If you apply for an extension after 6:00 PM on the last day of validity, please contact customer service for confirmation before making the purchase to avoid delays in processing.
• After the initial validity period ends, the online inquiry system [eSIM Activation URL] will no longer reflect the extended validity or remaining data. Please use your mobile device’s data usage statistics instead.
• All JBeSIM plans are eligible for top-up and extension. JB SIM cards with data capacity (X-GB) can be topped up, while time-based plans (6/8/16/31 unlimited) cannot be extended.

🅰️In principle, the item will be shipped on the same day or the next day after purchase.

For the Taiwan region, it will be shipped via registered mail through the post office. Please refer to the official website of the post office. *The shipping method will be based on the buyer’s scheduled start date of use. If it’s too close to the date, we may switch to time-limited registered mail.

For the Japan region, it will be shipped via Takkyubin (courier service). Please refer to the official website of Black Cat Takkyubin.