Does 5G use more data than 4G when you travel?
5G doesn't make a web page or a photo any bigger. It changes what apps choose to download, and how fast a daily allowance can run out. Here is how to keep it working for you.
The same task uses the same data on 5G or LTE: a 10 MB file is 10 MB on either. But faster connections let video and calls move up to higher quality, and Apple's Allow More Data on 5G mode enables more data-hungry features. On a capped travel plan, choose Standard data mode and 5G Auto.
Does a 5G connection make things bigger?
No. Data is counted in bytes, and a web page, a photo or an app update is the same size whatever network carries it. If you do exactly the same things on LTE and on 5G, the counter goes up by the same amount.
The difference is that people and apps don't do the same things on a faster connection. Three effects push usage up on 5G:
- Adaptive streaming moves up a level. Video apps choose quality based on connection speed. Netflix's mobile Automatic setting, for example, balances data and quality. With more speed available, other apps' automatic modes pick higher resolutions, which use more data per hour.
- The phone allows more. On iPhone, Apple's Allow More Data on 5G mode enables "higher data-usage features": higher-quality FaceTime, HD content, Apple Music, iOS updates over cellular and automatic iCloud backups. Apple says it is the default on some unlimited plans, depending on the carrier, and uses more cellular data.
- Everything finishes faster, so you do more. Pages and videos load instantly, so you tend to load more of them.
Which iPhone settings matter on a travel eSIM?
Open Settings → Cellular, tap the travel line, then Cellular Data Options. Apple describes two separate choices:
| Setting | Options (Apple's description) | For a travel plan |
|---|---|---|
| Voice & Data | 5G Auto: switches to LTE when 5G isn't noticeably better, saving battery. 5G On: always uses 5G when available; may reduce battery life. LTE: LTE only. | 5G Auto |
| Data Mode | Allow More Data on 5G: higher-data features, uses more data. Standard: automatic updates and background tasks, standard quality. Low Data Mode: pauses automatic updates and background tasks. | Standard, or Low Data Mode on a small plan |
Apple also says that Allow More Data on 5G can make the iPhone use 5G instead of Wi-Fi when Wi-Fi is slow or insecure on a network you visit only occasionally. On a hotel network that could move traffic onto your travel plan without you noticing. That is another reason to choose Standard while travelling.
Which Android settings matter?
On Pixel, open Settings → Network & internet → SIMs, choose the travel eSIM, and look at Preferred network type to choose between 5G and LTE. Data Saver applies on any network. Samsung and other makers have similar options under their SIM or mobile network settings.
How fast can 5G use up a daily cap?
Speed doesn't change the size of the allowance, but it changes how quickly a heavy task can use it. One gigabyte is 8,000 megabits. Divide by the speed:
| Steady speed | Time to move 1 GB | Example: a 3 GB download |
|---|---|---|
| 5 Mbit/s | ≈ 27 minutes | ≈ 80 minutes |
| 10 Mbit/s | ≈ 13 minutes | ≈ 40 minutes |
| 50 Mbit/s | ≈ 2.7 minutes | ≈ 8 minutes |
| 100 Mbit/s | ≈ 80 seconds | ≈ 4 minutes |
| 300 Mbit/s | ≈ 27 seconds | ≈ 80 seconds |
On a plan with 1 GB a day at full speed, a fast connection can use the whole day's allowance on one update or a few minutes of HD video. That is why the settings in the updates and backups guide matter more on 5G.
When is LTE the better choice?
- 5G is patchy. If the phone keeps hopping between 5G and LTE, fixing it on LTE can give a steadier connection. Try it if calls break up. Our slow-connection checklist covers this.
- Battery matters more than speed. On a long day of navigation and photos, LTE or 5G Auto is gentler.
- The plan has no 5G. If the plan or network doesn't support 5G, the phone uses LTE anyway.
Does a 5G speed test use a lot of data?
It can. A speed test moves as much data as the line allows for several seconds. The faster the line, the more that is. On a capped day, one test is enough.
So, should I worry about 5G and data?
Worry about settings, not the network type. With the travel line on Standard or Low Data Mode, video quality set in your apps, and updates kept to Wi-Fi, 5G simply makes things faster. With Allow More Data on 5G and automatic quality everywhere, it makes data disappear faster. Use the GB estimator with the video quality you will really use.
What do I need to use 5G on a travel eSIM?
Three things have to line up: a 5G-capable phone, a travel plan that includes 5G in that country, and 5G coverage from the local network where you are standing. If any one is missing, the phone simply uses 4G/LTE. TripoSIM shows a 5G badge on plans where 5G is available and lists the network the plan works on. The plan card is the place to check. Even with all three, coverage can be patchy away from city centres, which is why 5G Auto is usually the better setting than 5G On.
5G and a laptop hotspot
A fast 5G link makes a laptop on your hotspot feel like home broadband, which is exactly why it can use data like home broadband. Cloud sync catches up quickly, browsers load HD video, and updates finish in minutes rather than hours. If you tether over 5G, mark the hotspot as metered on Windows or turn on Low Data Mode for it on a Mac. Watch the phone's Personal Hotspot figure after the first hour. Speed is a gift for meetings, and a risk for everything running in the background.
Does 5G make the phone hotter?
Sustained heavy data use, such as hotspot work, long video calls or big downloads, warms any phone, and fast 5G transfers can be part of that. If the phone gets hot, move it out of direct sun and take it out of a thick case. Our hotspot battery and heat guide covers more.
Frequently asked questions
Should I turn off 5G to save data abroad?
Not usually. Setting the travel line's data mode to Standard or Low Data Mode saves more than switching to LTE. Choose LTE if 5G is unstable where you are, or to save battery. On iPhone, 5G Auto already falls back to LTE when 5G wouldn't help.
Does 5G drain the battery faster?
It can. Apple says 5G On always uses 5G when available and may reduce battery life, while 5G Auto switches to LTE when 5G wouldn't be noticeably better. For a long travel day, 5G Auto or LTE is the safer choice.
Why did my data run out faster on 5G?
Usually because apps used the extra speed: video at higher resolution, faster downloads and updates, and quicker scrolling. Check the per-app list and set video quality and the travel line's data mode.
Will my travel eSIM work on 5G?
Only if the plan and the local network support it and your phone is 5G-capable. TripoSIM shows a 5G badge on plans where it is available. Elsewhere the eSIM uses 4G/LTE.
Sources and how we checked
- Apple Support: Use 5G with your iPhone
- Apple Support: Use Low Data Mode on your iPhone and iPad
- Apple Support: Use cellular data on your iPhone or iPad
- Netflix Help Center: How to control how much data Netflix uses
- TripoSIM help centre (FAQ)
Figures were read from these pages on 6 November 2026. Apps change their settings and rates; if a number here disagrees with the app on your phone, trust your phone's own data counter. See how we get our figures.