Before buying data for a trip, the key question is simple: how much data do WhatsApp, Google Maps, or Instagram actually use on a normal day. Knowing this allows you to purchase the right amount of GBs and avoid overpaying or running out of data mid-trip.
Data consumption per app: the quick table
In short: messages and maps consume very little, video calls an average amount, and video (Reels, TikTok, YouTube) skyrockets the bill. A WhatsApp chat uses megabytes per day; an hour of high-quality video can use more than 1 GB. That's the difference that determines your plan.
| Usage | Approximate consumption |
|---|---|
| WhatsApp messages (text/photo) | ~5-15 MB per day |
| WhatsApp video call | ~150-350 MB per hour |
| Google Maps navigation | ~5-10 MB per hour |
| Instagram / TikTok (video scroll) | ~300-800 MB per hour |
| YouTube in high quality | ~1-1.5 GB per hour |
| Music streaming | ~50-100 MB per hour |
As you can see, the distribution is not balanced: video accounts for almost all the usage. If you control that aspect, a few GBs will be enough for your entire trip.
How much data WhatsApp uses (chats and video calls)
WhatsApp is one of the most efficient apps available. Sending and receiving text messages, compressed photos, and short audio clips barely uses a few megabytes a day: you could be texting throughout your entire trip without noticing the consumption. Pure text is almost free in terms of data.
Things change with video calls. A WhatsApp video call consumes around 150 to 350 MB per hour depending on quality and coverage. It's not an outrageous amount, but if you make long video calls daily to show your family the trip, add them to your calculation. Voice-only calls through the app consume much less, about 15-20 MB per hour. If you want to get the most out of the app without overspending, there are tips in how to use WhatsApp with an eSIM, where we explain how to continue receiving messages on your number while browsing with the eSIM.
Google Maps: what real navigation consumes
Here's a myth worth debunking: Google Maps does NOT consume as much data as people think. Navigating with active GPS consumes about 5 to 10 MB per hour, because most of the work (calculating the route, position) is light; what weighs heavily is downloading new maps for areas you haven't pre-loaded.
Golden tip: download the map of your destination in offline mode before you leave. This way, you navigate almost without using data and still have directions even if you lose coverage in a remote area.
In other words, you can use maps all day without it being an issue for your plan. The actual consumption of navigation is minimal compared to watching a single Reel. If your trip involves a lot of driving or hiking, offline maps are your best ally and also cover you in areas without signal. For the overall calculation of your trip, our guide on how much data you need for traveling will help.
Instagram, TikTok, and video: the biggest data users
And here we come to the culprits. Instagram and TikTok rely on autoplay videos, so just scrolling will consume data at a good pace: between 300 and 800 MB per hour depending on the quality. Uploading stories and Reels also adds up, especially video. YouTube in high definition is even more voracious, at 1-1.5 GB per hour.
- Scrolling Reels/TikTok: the big data devourer; on a trip, it can account for half of your consumption.
- Uploading video stories: it's heavy; do it with hotel Wi-Fi if you can.
- Streaming series/movies: save this for Wi-Fi, not mobile data.
The solution is not to stop using them, but to lower the playback quality in settings and save heavy video for when you have Wi-Fi. With that small habit, you cut consumption by half without giving up anything important. And if you're serious about saving, you'll find more ideas in tips for saving data abroad.
How to estimate your GBs for the trip
With the numbers above, you can calculate your plan without guessing. The formula is simple: estimate your daily consumption and multiply it by the number of days, allowing a small margin. Here are typical profiles to keep it simple:
| Traveler profile | Daily consumption | For 10 days |
|---|---|---|
| Basic (messages + maps) | ~0.3-0.5 GB | 3-5 GB |
| Medium (moderate social media) | ~1-1.5 GB | 10-15 GB |
| Intensive (daily video and stories) | ~2-3 GB | 20-30 GB or unlimited |
Most travelers fall into the medium profile. If you know you'll use Wi-Fi at your accommodation, you can opt for the lower end. And remember that an eSIM can be recharged in an instant if you run short, so there's no need to load up "just in case."
Tips to use less data abroad
With four quick adjustments, your data plan will go much further. These aren't sacrifices; they're habits you won't even notice once you implement them before traveling.
- Download maps, music, and series on Wi-Fi before you leave.
- Lower video quality on Instagram, TikTok, and YouTube.
- Disable video autoplay and background app refresh.
- Save heavy photo and video uploads for the hotel Wi-Fi.
With these tips, even a modest plan will last your entire trip. The idea is not to deprive yourself, but to spend smartly where it really matters. You can delve deeper into the topic with our guide on how to avoid roaming and always stay connected without surprises.
Frequently asked questions
How much data does a WhatsApp video call use?
Between 150 and 350 MB per hour depending on quality and coverage. Voice-only calls through the app consume much less, about 15-20 MB per hour, so you'll barely notice the consumption when talking without video.
Does Google Maps use a lot of data?
No, much less than people think: about 5-10 MB per hour while navigating. If you download the map in offline mode before you leave, consumption drops almost to zero and you still have directions without coverage.
Which app uses the most data when I travel?
Video, without a doubt. Instagram and TikTok can use 300-800 MB per hour of scrolling, and YouTube in high quality exceeds 1 GB per hour. Lowering the playback quality is the biggest saving you can make.
How many GB do I need for a 10-day trip?
An average traveler (moderate social media use and hotel Wi-Fi) is usually fine with 10-15 GB. If you only use messages and maps, 3-5 GB is enough; if you use video and stories daily, increase to 20-30 GB or consider an unlimited plan.
How can I use less data abroad?
Download maps and content on Wi-Fi before you leave, lower video quality, disable autoplay, and save heavy uploads for the hotel Wi-Fi. With these habits, a modest plan will last your entire trip.
Conclusion
Now you know the real breakdown: messages and maps barely count, video calls are in the middle, and video takes the prize. With this knowledge, you can choose the exact GBs for your trip without guessing. Calculate your consumption and purchase the right plan from our collection of travel eSIMs, and forget about running out of data halfway through your trip.
