How Much Data Do You Need for a Trip? A Traveler's Guide

The short answer: how much data per day

If you want a number rather than a lecture: budget 1 GB per day for a normal trip where you use maps, messaging, social media and the occasional video call. Lighter travelers get by on 300–500 MB a day. If you stream video or share your connection with a laptop, plan for 2–3 GB a day and don't be surprised when it's more.

Three tiers cover almost everyone. Find yours below, then check it against how you actually use your phone in the next section.

• Light — 300–500 MB a day: offline maps, WhatsApp text, email, boarding passes. A week runs 2–3 GB.
• Moderate — 700 MB to 1 GB a day: live navigation, social media, music, a short video call home. A week runs 5–7 GB.
• Heavy — 2–3 GB a day: video streaming, long video calls, uploading photos and clips, hotspotting a laptop. A week runs 15–20 GB.

What actually uses your data

Most people guess wrong about this in both directions. Maps barely register. Video is what empties a plan.

The figures below are per hour at typical mobile quality. Exact numbers shift with signal strength and your settings, but the ratios hold everywhere.

• Google Maps turn-by-turn: about 3–5 MB an hour. Satellite view is 20–100 MB an hour — the photographs are the expensive part, not the directions.
• WhatsApp texts and voice notes: negligible, well under a megabyte each. Voice calls run 18–30 MB an hour; video calls around 300 MB an hour.
• Instagram and TikTok: roughly 0.5–1 GB an hour of scrolling. Reels and Stories are video, and video is where the cost lives.
• Music streaming: about 40 MB an hour at normal quality, up to 150 MB an hour on the highest setting.
• Netflix and YouTube: around 300 MB an hour on data saver, 700 MB on standard definition, and roughly 3 GB an hour in HD.
• Photo and video backup: one phone photo is 3–5 MB, but a minute of 4K video can exceed 300 MB. Automatic cloud backup over mobile data is the most common way people empty a plan in a single afternoon.

The formula: daily use × days, plus a quarter

Take your daily estimate, multiply by the number of days, then add 25%. The buffer isn't padding. It covers the OS update that installs itself, the podcast that syncs on the train, and the group chat that turns into a video call because someone wanted to see the view.

Trip length matters less than you'd think for short stays. Two days of heavy use can cost more than a full week of light use, so estimate from your habits first and your calendar second.

• Weekend city break, light use: 0.4 GB × 3 days = 1.2 GB, plus buffer → 2 GB
• One week, moderate use: 0.8 GB × 7 days = 5.6 GB, plus buffer → 7 GB
• Two weeks, moderate use: 0.8 GB × 14 days = 11.2 GB, plus buffer → 14 GB
• One week, heavy use with a hotspot: 2.5 GB × 7 days = 17.5 GB, plus buffer → 22 GB
• A month working remotely: 2 GB × 30 days = 60 GB, plus buffer → budget 75 GB, or start lower and top up

Matching your estimate to a plan

Lumbus plans come in fixed sizes — 500 MB, 1, 2, 3, 5, 10, 20 and 50 GB — with validity windows that are typically 1, 7, 15 or 30 days. Not every size exists in every country, so the plan page for your destination shows what's genuinely available there rather than a generic list.

Two rules make the choice easy. First, match the validity to your trip, not to the data. A 5 GB plan valid for 30 days and a 5 GB plan valid for 7 days hold exactly the same data — the only difference is how long you have to use it. Second, buy near the middle of your estimate instead of the top of it.

That second rule works because roughly three quarters of Lumbus plans can be topped up: you add data to the eSIM already installed on your phone instead of buying and installing a second one. Running out becomes a two-minute fix, which removes the reason to pay upfront for headroom you probably won't touch.

• Short trip of 1–3 days, light use: 1 GB valid 7 days
• One week, moderate use: 5 GB valid 30 days
• Two weeks, moderate use: 10 GB valid 30 days
• A month-long stay or remote work: 20 GB valid 30 days, topped up when it runs low
• Several countries in one trip: check the regional plan for your area before buying a separate plan per border

Five things that quietly drain a plan

None of these are about being frugal with your phone. They're settings that default to on and spend data you never chose to spend. Change them before you fly, while you still have Wi-Fi and patience.

• Photo and video backup. Set iCloud Photos or Google Photos to upload over Wi-Fi only. This single setting is worth more than every other tip here combined.
• Background app refresh. Dozens of apps checking in all day adds up quietly. Turn it off for everything except the handful you'd actually miss.
• Autoplay video. Instagram, TikTok, X and Facebook all play video as you scroll by default — including clips you were never going to watch.
• Offline maps. Download your city in Google Maps before you leave. Navigation still works normally, and you stop paying for map tiles you already downloaded once.
• Automatic OS and app updates. One iOS or Android update over mobile data can run several GB — more than many travelers' entire trip plan.

When the normal advice doesn't apply

A few situations break the daily average, and they're worth planning around because each one can double your total on its own.

• Hotspotting a laptop. A laptop treats the connection like home Wi-Fi — cloud sync, system updates, dozens of open tabs. Budget at least double.
• Daily video calls home. Half an hour a day for a week is roughly 1 GB on its own, before anything else you do.
• Traveling with children. One tablet playing video in the back of a car can outspend every adult phone on the trip combined.
• Multi-country itineraries. A regional plan usually costs less than several country plans and you install it once instead of at every border.
• Long layovers. Check whether your plan covers the country you're connecting through. A three-hour layover with no data is where a lot of travelers wish they'd looked.