eSIM Japan ✅ Best data plans for travelers

Your eSIM may not work in Japan due to several factors. Check if your device is compatible with local networks, ensure that the eSIM is activated correctly, and verify that you have a valid data plan. Additionally, confirm that airplane mode is off and that network settings are properly configured.

You can always track your remaining data usage and day amount in the "Internet" section in the Yesim application, or just sign in to your profile on the website yesim.app.

Yesim’s data plans are contract-free, with no roaming fees included. You pay only for the traffic you have used according to the eSIM data plan you bought.

Yes. You can keep using WhatsApp, SnapChat, Telegram or other messengers together with prepaid eSIM from Yesim.

You don’t need to sign any contract to use Yesim’s eSIM card. You can activate and deactivate it at any time, depending on your travel plans.

These mobile phone eSIM plans offer unlimited data usage without any extra charges for exceeding the data limit. They are ideal for those users who need high-speed data access for posting photos, streaming videos, messaging, online gaming, and social media.

You can find unlimited eSIM data plans for each country in the Internet section of the Yesim app.

While such a data plan offers unlimited high-speed data usage, you should be aware that your data speed will not always be at its maximum. To prevent network congestion, most mobile service providers implement a daily usage limit. Once this limit has been reached, your data speed will be reduced, or "throttled."

To avoid throttling, it’s recommended to monitor your data usage regularly. Most smartphones have built-in tools that track your data usage; just check and adjust it accordingly.

The speed of mobile data can be affected by many factors, such as the type of smartphone you are using, the available network technology, the websites or applications you are accessing, the time of day, network congestion, other factors in the transmission path, and the cell tower's or area's data usage. Additionally, the download and upload speeds depend on the country's network infrastructure and boradband connection type. Low internet speed is usually caused by a mobile operator's poor coverage and can be remedied by rebooting your phone and sending us screenshots of the internet speed with and without LTE mode enabled.

You can buy a new data plan for any new country or region on the Yesim list and use it as many times as you need within the validity period. The only limit is the number of days and megabytes. You can also activate the Pay & Fly plan, which works for any country, and you will pay for the traffic you have actually used.

Yes, eSIM technology is secure for several reasons. First, eSIMs are embedded directly into devices, making it difficult for unauthorized users to remove or tamper with them. Second, eSIMs utilize secure elements to store sensitive data, such as your mobile identity, which helps prevent hacking. Additionally, eSIM activation requires scanning a QR code or using a specific activation code, adding another layer of security. Overall, eSIM technology provides a robust and reliable way to ensure the security of your mobile communications.

You can only use Yesim on all compatible Apple and Android phones. Please check the full list of compatible devices to check if your smartphone or tablet is eSIM supported. You can also check if your device supports eSIM technology by using this code: *#06#.

To estimate your data needs for an eSIM in Japan, consider your typical online activities. For video streaming, 1 GB allows approximately 1 hour of Full HD (1080p) streaming or 4-5 hours at lower quality (240p). For audio streaming, you can enjoy around 20 hours of low-quality music (96 kbps) with 1 GB. Web browsing will consume about 250-300 KB per page without images. If you plan to make video calls, expect to use about 1 GB for 1-1.5 hours of HD quality. Adjust your data plan based on these estimates.

We recommend that you buy a data plan before your trip and activate it immediately when you arrive at Japan. It is easier and more cost-effective. Our team is here to help you stay connected and make your trip hassle-free.

The Yesim Loyalty Program allows users to earn Ycoins (bonus points) through various activities, including:

• 5% Cashback
• Referral Program
• Exclusive Discounts & Promo Codes
• Free eSIMs

These bonuses can be used to purchase new eSIM plans, top up your Pay & Fly balance, or buy virtual phone numbers.

Advantages of Yesim eSIM:

Convenience: Activation without visiting a store. Multiple plans: Ability to store multiple profiles. No physical card: No worries about losing it. Instant activation: Connectivity right after arrival.

eSIM offers ease of use and flexibility, making it a better choice for travelers.

Looking for the best eSIM for Japan? Yesim offers fast, reliable mobile data with instant activation — no need for a physical SIM card. Whether you're staying a few days or several weeks, choose from flexible, prepaid data plans tailored to your travel needs.

Popular plans for Japan include:

• Prepaid mobile data plans • Unlimited mobile data plans

Enjoy high-speed 4G/5G and LTE coverage across major cities and tourist regions, with no contracts or hidden fees. Just download the Yesim app, install your eSIM, and get online in minutes. Yesim is ideal for tourists, digital nomads, and business travelers who want stress-free connectivity without roaming charges.