Bottom line: Slowdowns on an international eSIM tend to happen once you've used up your plan's data, so the most proactive thing you can do is use your data more efficiently in the first place. By reviewing the settings that quietly use data in the background—like video streaming and automatic app updates—and leaning on Wi-Fi when it's available, you can stretch the same allowance much further. For how throttling actually works and when it kicks in, see What Is eSIM Throttling? When Speeds Drop and What to Do. This article focuses on the step before that: how to keep your data from running down so quickly.
When you're using an eSIM abroad, you may notice that your data ran out faster than expected, or that a video suddenly started buffering. In most cases this is because you've used up the data included in your plan and switched into a reduced-speed state. In other words, if you want to avoid throttling, cutting down on data use is the most practical place to start. Below are data-saving tips you can put into practice even if it's your first trip—covering both your settings and your everyday habits. (Information is current as of June 2026.)
Why does data disappear so fast?
Data isn't only used by whatever is on your screen. Your phone also communicates in the background, which means it can use data without you realizing it. The main sources are:
- Video and music streaming: the higher the quality, the more it uses—usually the biggest single source of data use.
- Automatic app updates and photo backups: large transfers can happen without you noticing.
- Autoplay on social media: videos load just from scrolling your feed.
- OS and app updates: these can range from hundreds of MB to several GB.
Once you know where your data goes, it becomes clear which switches are worth flipping.
Rough guide to data-heavy activities
The table below gives a rough idea of how much data different activities use. Actual figures vary with your connection and each app's settings, so treat these as estimates only. For the most accurate, up-to-date figures, check each service's official guidance.
| Activity | Approx. per hour | Saving tip |
|---|---|---|
| Maps and text-based browsing | A few tens of MB | Light enough as-is |
| Social media (image-heavy) | Roughly 100–300 MB | Turn off autoplay |
| Music streaming | Roughly 50–150 MB | Download in advance |
| Video (standard quality) | Roughly 0.5–1 GB | Lower quality / watch on Wi-Fi |
| Video (high quality) | Roughly 2–3 GB | Go easy while traveling |
Settings to adjust before you go
1. Turn off automatic app updates and backups
Disabling automatic app updates and automatic photo or cloud uploads over mobile data helps prevent large transfers. Set updates and backups to run only on Wi-Fi so they happen in one batch when you're connected.
2. Download videos and music ahead of time
For long flights and travel days, download the videos and music you want over Wi-Fi before you leave. Do the same with offline maps in your navigation app—saving them in advance cuts down on data use once you're on the ground.
3. Lower your streaming quality
Most video and music apps let you cap the video or audio quality. Switching to a "Standard" or "Data Saver" setting while traveling keeps usage down for the same amount of viewing or listening time.
Habits that help while you're traveling
It's not just settings—your day-to-day habits make a big difference too.
- Use Wi-Fi at your accommodation and venues: shifting heavy transfers to Wi-Fi preserves your eSIM data.
- Turn off video autoplay on social media: tap only the videos you actually want to watch.
- Limit background refresh for apps you're not using: for apps where you only want notifications, dial back their updates.
- Check your remaining data regularly: your device's data-usage screen helps you keep track of your pace and avoid running out.
Note that Bloomy plans are generally data-only. If you need a phone number, SMS verification, or voice calls, it's worth lining up another option as well. App-based calls such as WhatsApp may work wherever you have a data connection, depending on the app and conditions.
If you've used up your data
Even with careful saving, you can still run short. When that happens, you'll choose between continuing at reduced speed or adding more data. For when speeds drop and what your options are, see our guide to throttling. If you expect to stream a lot of video or use tethering during a longer stay, you might start with a more generous plan, or—after reviewing the terms—consider an unlimited-type option. Even unlimited plans may apply a fair-use policy or adjust speeds after a certain amount of use, so check the latest terms before you buy.
Choosing the right amount of data with Bloomy
If you're not sure how much data to pick, it helps to work backward from how many days you'll travel and how you'll use your phone. Lean toward less if you mainly use maps and messaging, and more if you stream video or tether. To search by destination, data amount, and trip length, you can compare plans on the Bloomy eSIM comparison page. The actual plans, pricing, and terms available can vary by country and region, so check the latest details on the comparison page before purchasing. For questions about setup or use, our FAQ is a good place to look too.
Summary
You can get ahead of throttling on an international eSIM by setting yourself up to use less data before you run out. Turn off automatic updates and backups before you leave, and download videos and maps in advance. While traveling, lean on Wi-Fi and check your remaining data often—just these basics can make a real difference in how it feels day to day. Start by thinking about how you actually use your phone, and estimate the amount of data that fits.
