Last updated: June 2026
When you rely on an eSIM abroad, you might find that your data runs out faster than expected, or that your connection quietly slows down at some point. Many plans are designed so that once you've used up your allotted data, speeds become more limited. That's why using your data efficiently is the most practical way to keep slowdowns at bay. In this guide, we'll walk through simple, beginner-friendly tips—from a few quick settings to smarter app habits—that anyone can put into practice, even on a first trip overseas.
- Why saving data helps you avoid speed slowdowns
- Basic data-saving settings you can adjust right now
- Which features use the most data, and how to rein them in
- How to choose the right plan when saving alone isn't enough
Why saving data helps you avoid slowdowns
The short answer: in most cases, a slowdown kicks in once you've used up the data included in your plan. Many travel eSIMs come with a set amount of data, and as you approach that limit, your connection speed may be reduced. So by pacing your usage, you can often push that slowdown further out—or sidestep it altogether.
If you'd like to understand how and when these slowdowns actually happen, it's worth also reading What is eSIM throttling? When connections slow down and what to do about it—it'll make the tips in this article even more useful. Keep in mind, too, that speed isn't determined by your data allowance alone: the local network, your location, and congestion at busy times of day all play a part. In other words, saving data helps, but it can't guarantee fast speeds every time.
Basic data-saving settings you can adjust right now
Start by reviewing a few basic settings before you travel or right after you arrive. Each one takes just a couple of minutes in your phone's settings.
- Set app auto-updates to Wi-Fi only: App updates can be large. Turn off automatic updates over mobile data.
- Pause automatic photo and cloud backups: Auto-uploading photos and videos can quietly eat through your data. Set it to run only when you're on Wi-Fi.
- Turn off autoplay in video and music apps: Stopping videos from playing automatically in your social feeds makes a real difference.
- Use your phone's built-in data-saving mode: Turning on Low Data Mode on iPhone or Data Saver on Android helps curb background data use.
- Make it easy to check how much data you have left: Knowing what's remaining makes it much easier to pace yourself.
App-based calls that run over data—think WhatsApp, Messenger, or FaceTime—work just as usual. What you can't do is make or receive regular phone calls (voice calls tied to a phone number) or send SMS texts, because this is a data-only eSIM. App calls, especially video calls, use a fair amount of data, so for longer conversations it helps to find a spot with Wi-Fi. If you need a phone number or SMS, consider a separate solution or a plan that includes a number.
Which app features use the most data, and how to save
Even on the same connection, how much data you use depends a lot on what you're doing. The table below is a rough guide to which activities tend to be data-hungry. Actual usage varies with video quality and how you use each app (general trends as of June 2026).
| Activity | Tends to use | How to save |
|---|---|---|
| Watching video (high quality) | A lot | Lower the quality to standard or low / download ahead of time on Wi-Fi |
| Video calls | A lot | Save longer calls for Wi-Fi / switch to audio only |
| Maps and navigation | Moderate | Save offline maps in advance |
| Browsing social media | Moderate | Turn off video autoplay |
| Messaging and mostly text-based use | A little | Nothing to worry much about for everyday use |
| Music streaming | Moderate | Download on Wi-Fi and play offline |
High-quality video and video calls are especially data-hungry, so making good use of Wi-Fi at your hotel, the airport, and similar spots helps you hold on to more of your data for when you're out and about.
Habits that tend to burn through data quickly
See how many of these sound like you. The more that apply, the more you stand to gain from the saving tips above.
- Watching video the whole time you're on the move
- Scrolling social media for long stretches with videos autoplaying
- Auto-backing up photos and videos to the cloud on the spot
- Tethering a laptop or tablet to the same eSIM
- Letting apps update automatically over mobile data
Tethering is handy, but sharing your connection across several devices uses up data faster. Whether tethering is allowed—and under what conditions—can differ from plan to plan, so it's a good idea to check the latest details before you buy.
How to choose a plan when saving isn't enough
If your data still feels tight even after cutting back, the plan size may simply not match how you use your phone. If you stream video or make video calls regularly, or you're staying for a longer trip, it's worth considering a plan with more generous data—or an unlimited-style plan—so you can worry less about hitting a slowdown. On the other hand, if you mostly message and look things up, a smaller plan with just what you need may be plenty. Do note that unlimited-style plans are subject to a fair use policy.
Not sure how much data is right for you? Bloomy eSIM's comparison page lets you find a plan by destination, data amount, and trip length. Recommended data sizes and terms can vary by country and region, so please check the latest details before purchasing. And if you get stuck on settings or usage, our FAQ is a helpful place to look.
Wrapping up
Since most slowdowns are triggered by using up your data, pacing yourself is the most accessible way to keep your connection comfortable. Start by reviewing the basics—auto-updates, backups, and the like—and lean on Wi-Fi for video and video calls. Those two habits alone will stretch your data noticeably further. If it still isn't enough, the best move is to switch to a plan whose data size fits the way you travel. With the right amount of data for your needs, you can set yourself up to use your phone with confidence wherever you go.
This article reflects general information as of June 2026. Data usage varies with video quality, device, and how you use your phone, and speeds are also affected by the local network, your location, and the time of day. Plan details and terms are subject to change, so please check the latest information before purchasing.
