Choosing a plan · 6 min read
How much eSIM data do I need for a trip?
Estimate the right travel eSIM allowance for maps, messaging, social media, video and remote work without paying for data you will not use.
Start with how you use your phone
Trip length matters, but daily habits matter more. A traveller who mainly uses maps and messages can use less data in two weeks than someone watching video uses in an afternoon.
- 1–3 GB: maps, messaging, email and occasional browsing.
- 5–10 GB: regular social media, music and some short video.
- 10–20 GB: frequent video, photo uploads or light laptop tethering.
- 20 GB or more: remote work, heavy streaming or sharing data with another device.
Think in data per day
Divide the allowance by the number of travel days to make plans easier to compare. A 5 GB plan over ten days gives you an average of about 500 MB per day, while a 10 GB plan over a month averages roughly 330 MB per day.
- Maps and messaging usually need relatively little data.
- Automatic photo backup can quietly use several gigabytes.
- HD video and video calls are normally the largest everyday users.
- Tethering a laptop can make desktop updates and cloud sync use mobile data.
Reduce usage without making the trip inconvenient
- Download offline maps before departure.
- Turn off mobile data for cloud photo backup and automatic app updates.
- Use hotel or trusted Wi-Fi for long video calls and downloads.
- Lower streaming quality when using the travel eSIM.
- Disable automatic mobile-data switching to protect your primary SIM from roaming charges.
Choose a little headroom
Running out of data during a transfer or late arrival is more disruptive than returning with a small amount unused. If your estimate sits between two plans, the larger allowance is usually the calmer choice—especially when the price difference is modest.