eSIM stands for embedded SIM, a virtual SIM card that's integrated into your device. Unlike traditional SIM cards that need to be physically swapped when changing carriers, eSIMs provide a virtual pathway for switching carriers seamlessly. You simply reconnect to the new carrier's network, download the new eSIM in seconds, and you're good to go. No physical cards, just pure convenience!
Picture this: You arrive at a Japanese airport without worrying about finding a SIM card slot. With a simple setup, your phone roams freely on Japanese networks. Plus, you don't even have to remove your home country's SIM card, ensuring you can still receive international calls.
Check out the most recommended Japan eSIM
Once you've purchased eSIM, you'll receive a QR code. Some will be emailed to you, others can be accessed directly from MyPage, and some may require you to visit a specific website and enter your order number to obtain it. This QR code is what you'll use to install eSIM on your device—simply scan it, and eSIM will be installed.
For detailed eSIM setup instructions, you can visit this page.
eSIM Setup Instructions
Due to its recent emergence, some older phone models might not support eSIMs. For instance, iPhones released before the iPhone XR (pre-2018 models) likely don't support eSIMs. Similarly, some Android phones, especially those before the Google Pixel 4, may not support eSIMs either.
Additionally, even some newer phones manufactured in certain countries or regions may not support eSIMs.
Also, if your phone is SIM locked, you won't be able to use eSIMs (and probably not physical SIM cards either, in which case you might consider Japanese pocket WiFi Rental).
If your phone doesn't support eSIMs, you can consider purchasing a prepaid Japanese SIM card (with large data/unlimited data) or opting for Japanese pocket WiFi rental services.
Once activated, eSIMs can't be removed or reinstalled at will.
Unlike traditional physical SIM cards that can be easily swapped, eSIMs are digitally embedded in the device. This means once you've activated an eSIM on a device, you can't reinstall the same eSIM after deletion. This might be considered a drawback compared to traditional physical SIM cards. Therefore, before activating an eSIM, ensure the chosen carrier and plan suit your needs to avoid inconvenience later on.
It's not just Japanese eSIMs that have this limitation; eSIMs in most countries have similar restrictions.
Typically, eSIMs are tied to specific devices and can't be easily moved between different devices like traditional SIM cards.
Once you've activated an eSIM on a device, it remains bound to that device and can't be transferred freely to another. This restriction is in place for security and authorization purposes, ensuring eSIMs are used only on authorized devices, thus enhancing communication security.
Unlike traditional physical SIM cards, some eSIM plans may set a specific validity period, requiring users to complete the activation process within a certain timeframe after purchase. This is because of the virtual nature of eSIMs; carriers may set this limit to manage resources and ensure users activate services promptly.
eSIM Provider | Main Network Coverage | Price Range | Speed Limitations | eSIM Setup |
---|---|---|---|---|
CDJapan Rental | NTT docomo (Japan's largest and most stable network) |
30GB (8 days) ¥3200 50GB (16 days) ¥3900 50GB (31 days) ¥4900 |
Speed reduced to 200kbps after exceeding data limit | QR code displayed on MyPage |
Company A in Japan | KDDI/AU | Unlimited data From ¥950 to ¥5000 |
Daily usage limits despite being an unlimited plan. Speeds reduced to 256Kbps after daily usage of 0.5G/1G/2G. | QR code sent via email |
Company B in Taiwan | NTT docomo | 10GB (30 days) ¥6000 30GB (30 days) ¥8500 50GB (30 days) ¥14000 |
eSIM becomes unusable after exceeding data limit. | QR code displayed on MyPage |
Understanding the pros and cons of Japanese eSIMs and their usage scenarios in Japan is crucial before your trip. While eSIMs bring convenience and flexibility, they also come with limitations and challenges that require careful consideration. By carefully evaluating and selecting the right eSIM plan for yourself, you can make your travels more enjoyable and hassle-free.