This product is a service for customers residing outside of Japan.
In accordance with the regulations of the Ministry of Internal Affairs and Communications (MIC), individuals residing in Japan are not eligible to apply for this product (service with a Japanese phone number).
FAQ Category Important Notes Before Purchase
Which countries can JB Voice eSIM／SIM be used in?
A: 🌍 You can apply from anywhere in the world, with no specific country restrictions.
JB Voice eSIM／SIM uses the Japanese docomo network and can be used in countries where docomo international roaming services are available.
Before using the service, please check whether your smartphone model is compatible with docomo international roaming.
For details, please refer to: International Roaming Device Compatibility
Can my smartphone use JB Voice eSIM? If I’m not sure, which one should I choose?
A:
Before using JB Voice eSIM, please make sure that your smartphone meets both of the following requirements:
- Supports eSIM
- Is compatible with docomo’s international roaming service
Please note that docomo’s international roaming service has device compatibility limitations. Therefore, even if your smartphone supports eSIM, it does not necessarily mean that JB Voice eSIM will work properly.
If you are not sure whether your smartphone supports eSIM, or whether it is compatible with docomo’s international roaming service, we recommend choosing the JB Voice Physical SIM Card instead.
A physical SIM card does not require eSIM support. As long as your smartphone has a compatible physical SIM card slot, you can use it. You can also borrow a compatible smartphone from a family member or friend to test or verify compatibility in advance, reducing the risk of being unable to use the service due to device compatibility issues.
How to Check if Your Phone Supports eSIM & Find Your EID
【iPhone (iOS)】
🔹 Method 1: Check Your EID in Settings
Settings ➔ General ➔ About ➔ Find EID
✅ If a 32-digit EID is displayed: Your iPhone supports eSIM.
🔹 Method 2: Check via the Dial Pad
Dial: *#06#
The Device Information screen will appear:
✅ If an EID is displayed: Your iPhone supports eSIM.
➔ If only the IMEI is displayed: Please purchase a physical SIM card instead.
※ Some iPhone models purchased in China, Hong Kong, or Macau may not support eSIM. Please check your device model before purchasing.
【Android Devices】
The operation steps may vary depending on the smartphone brand and model. The following example uses OPPO A79.
🔹 Method 1: Check EID through Settings
① Go to 【Settings】 ➔ 【About device】
② Tap 【Status】
③ Check whether an EID (32 digits) is displayed
✅ EID (32 digits) displayed: The phone supports eSIM
❌ No EID displayed: Please purchase a physical SIM card instead
🔹 If there are no 32 digits shown after EID, the eSIM setting is usually disabled. Please follow the steps below to enable eSIM.
④ Go to 【Settings】 ➔ 【Mobile Network】 ➔ Turn on the disabled eSIM ➔ Check that the 32-digit EID appears after EID (as shown in Step ⑤ below)
⚠️ Important Notes
The settings location may vary depending on the Android brand and model. If you cannot find the EID, please search for “EID” or “eSIM” in 【Settings】.
Before purchasing JB Voice eSIM, please confirm that your phone supports eSIM and enter the correct 32-digit EID. If the eSIM cannot be activated or needs to be reissued due to an incorrect EID, a reissuance fee will be charged.
Device Compatibility for International Roaming
📢 Normal Usage Within Japan ; Compatibility Guide for docomo International Roaming VoLTE Calls
【Warning】If you only intend to use the service for verifying Japanese websites while overseas, please note that Samsung devices, iPhone 16e, Phone 17e/Air, and iPhone 18 series may not work properly overseas.
As 3G networks have been shut down in Japan and many other countries, you must use a VoLTE-compatible phone model to utilize docomo’s international roaming voice call services.
⚠️ Some devices may be completely unable to use the service overseas, while others may only be able to receive SMS and may not be able to make or receive calls.
💡 Actual compatibility may vary depending on the country or region where the device was manufactured.
■ ASUS
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| ASUS ROG Phone 8、ASUS ROG Phone 9 | 〇 | 〇 | ||
| ASUS ZenFone Max Pro (M2) | 〇 | 〇 | ||
| ASUS Zenfone 9 | AI2202 | 〇 | 〇 |
■ Google Pixel
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| Global Version | 〇 | 〇 |
■ HUAWEI
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| HUAWEI Mate 50 Pro | 〇 | 〇 |
■ iPhone
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| 16e、17e/Air 、18 Series | MHRW4ZP/A TW/TH/VN Global Version（i18） | ❌ | 〇 | Unable to make calls while overseas, but SMS can be received after configuring the APN. |
| 6 、7、X、11、12、13、14、15、16、17 Series | Global Version | 〇 | 〇 |
■ OPPO
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| OPPO Reno14 5G | CPH2737 | 〇 | 〇 | |
| OPPO Reno14 Pro | 〇 | 〇 | ||
| OPPO A79 5G | CPH2557(Global Version) | 〇 | 〇 |
■ Motorola
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| Motorola Edge 60 Fusion | 〇 | 〇 |
■ Samsung
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| Samsung Galaxy S Series | TW、US、HK、SG、AU | ❌ | 〇 | |
| Samsung Galaxy A Series | TW、US、HK、SG、AU | ❌ | 〇 |
■ SHARP
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| AQUOS wish5 | SH-M32TW | 〇 | 〇 | |
| AQUOS R9 | SH-M28TW | 〇 | 〇 |
■ SONY
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| Xperia 1 V | XQ-DQ72 TW/HK | 〇 | 〇 |
■ vivo
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| vivo V29 5G (V2250)、vivo V40 5G、vivo Y55、vivo X300 | 〇 | 〇 |
■ Xiaomi
| Model Name | Model Number | Roaming VoLTE Calls | Roaming SMS | Notes |
|---|---|---|---|---|
| Redmi 12C、Note 11 Pro+ 5G、Redmi Note 12 Pro+ 5G | 〇 | 〇 | Dial*#*#86583#*#* directly to enable or disable the VoLTE calling function. | |
| Xiaomi 12T | 〇 | 〇 | ||
| POCO F8 Ultra、POCO X8 Pro Max | 〇 | 〇 |