30日間の日本滞在なら何GB必要?長期滞在向けデータ通信量の目安

How many GB of data do I need for a 30-day stay in Japan? A guideline for data usage during long-term stays.

目次

    During a 30-day stay in Japan, many people may wonder, "Is 30GB enough?" "Should I choose an unlimited plan?"

    When living in Japan for nearly a month, the opportunities to use not only Google Maps and LINE, but also video streaming, social media, online meetings, and tethering will increase.

    Additionally, the required data usage can vary greatly depending on the purpose of your stay, whether it's for travel, studying abroad, working holiday, long-term business trips, or temporary return.

    In this article, we will explain in detail the necessary data usage for a 30-day stay in Japan, as well as recommended capacities based on different usage styles.


    How many GB do you need for a 30-day stay in Japan?

    Usage Style Estimate
    Tourism/Daily Use 30-50GB
    SNS/Photo Posting About 50GB
    Studying Abroad/Business Trips 50GB to Unlimited
    Video Streaming/Tethering Unlimited is recommended

    For a one-month stay, having over 30GB is reassuring even for a tourism-focused trip. If you use the internet daily for studying or business trips, it is recommended to have more than 50GB or an unlimited plan.


    Recommended data capacity by purpose of stay

    Purpose of Stay Recommended Capacity
    Travel 30GB
    Temporary Return 30-50GB
    Studying Abroad Over 50GB
    Long-term Business Trip 50GB to Unlimited
    Working Holiday Unlimited

    During a 30-day stay, the usage will be closer to daily life rather than just travel, so it is important to choose the capacity according to the purpose of your stay.


    Usage scenarios where data consumption tends to increase

    • Daily use of Google Maps and transit navigation
    • Posting on Instagram and TikTok
    • Watching videos on YouTube and Netflix
    • Online meetings via Zoom and Google Meet
    • Tethering with a laptop
    • Backing up photos and videos to the cloud
    • Updating apps and OS

    During a one-month stay, even if the daily data usage is low, it can add up significantly, so choosing a generous capacity is reassuring.


    What if there is Wi-Fi at home or in the hotel?

    If there is Wi-Fi at your accommodation, you can save a significant amount of mobile data by using Wi-Fi for video streaming and app updates.

    On the other hand, if you spend a lot of time outside or work while on the go, it is recommended to choose a plan with more than 30GB even if Wi-Fi is available.


    How to save data usage during a 30-day stay in Japan

    During a long stay of 30 days, you can significantly reduce data consumption just by being a little mindful of your daily usage.

    • Use Wi-Fi at home, hotels, schools, and workplaces
    • Save Google Maps for offline use
    • Watch videos in a Wi-Fi environment
    • Turn off automatic backup for photos and videos
    • Stop background data usage for unnecessary apps
    • Update OS and apps in a Wi-Fi environment

    During a long stay, data usage accumulates daily. By utilizing Wi-Fi, you may find that 30GB to 50GB is sufficient for your needs.


    Which should you choose: 30GB, 50GB, or Unlimited?

    Capacity Recommended Usage
    30GB Travel, temporary return, tourism-focused
    50GB Studying abroad, long-term business trips, frequent SNS use
    Unlimited Daily video streaming, tethering, online meetings

    While 30GB may be sufficient for a tourism-focused trip, for long stays, it is reassuring to choose a plan with more than 50GB or an unlimited plan based on your usage style.


    Frequently Asked Questions

    Is 30GB enough for 30 days?

    If you primarily use Google Maps, LINE, and web searches, 30GB may be sufficient. However, if you use social media and videos daily, 50GB or more is recommended.

    How many GB do I need for studying abroad or a working holiday?

    If you have a lot of online classes, video streaming, and SNS usage, 50GB or more or an unlimited plan is recommended.

    Can I use eSIM for long-term business trips?

    Yes. If you use online meetings and tethering, it is reassuring to choose a plan with more than 50GB or an unlimited plan.

    Is a smaller capacity okay if I have Wi-Fi?

    If you can use Wi-Fi at home, hotels, schools, or offices, you can significantly save on mobile data usage.

    What if I use tethering every day?

    If you connect and use a laptop, data usage will increase significantly, so an unlimited plan is recommended.

    What should I do if I run out of data?

    There are products available for purchasing additional data. For long stays, it is reassuring to check in advance whether additional purchases are supported.

    Should I choose an unlimited plan?

    If you watch videos daily or use tethering for work, choosing an unlimited plan allows you to use data without worry.

    Is unlimited necessary just for travel?

    For typical travel, 30GB to 50GB is often sufficient.


    Conclusion

    During a 30-day stay in Japan, the required data usage can vary greatly depending on the purpose of your stay, whether it's for travel, studying abroad, business trips, working holiday, or temporary return.

    • For travel or temporary return, around 30GB
    • For studying abroad or long-term business trips, about 50GB
    • For video streaming and tethering, unlimited is recommended
    • Utilizing Wi-Fi can help save on data usage

    Choose the optimal data capacity eSIM according to your stay duration and usage style.

    View Japan eSIM products and pricing plans

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