How Much Data Do I Need for Travel? Per-App Usage Table and Plan Sizes by Trip Length (2026)

Summary

Most travellers use about 0.7–1 GB of mobile data a day. The only measured travel study we found, 82 Japan eSIMs tracked by Travelsim Asia in 2026, put the median trip at 4.7 GB, which works out to about 1 GB a day on short trips and 0.7 GB a day over a week. Ericsson's June 2026 Mobility Report puts the at-home average at 22 GB a month, or 0.7 GB a day, with Wi-Fi doing most of the work.

Budget 1 GB a day for maps, messaging, search and photos, 2 GB a day if you stream video or take work calls on cellular, and buy one size up. Video is the only thing that moves the number: Netflix's own figure is about 4 hours per GB on its default mobile setting.

What the measured data says

Three dated figures, from the best sources available in November 2026:

Median trip: 4.7 GB. Travelsim Asia's Japan eSIM data usage study (June 2026) followed 82 activated eSIMs across 59 completed trips: median 4.7 GB, mean 6.6 GB, roughly 1 GB a day on short trips and about 0.7 GB a day on trips of a week or more. About 39% of purchased data went unused. One vendor, one country, small sample, but it is measured usage rather than a guess.
At home: 22 GB a month. Ericsson's Mobility Report, June 2026 puts global mobile data traffic per active smartphone at 22 GB a month at the end of 2025, up from 19 GB in 2024, with North America and Western Europe at about 25 GB and India at 37 GB. That is 0.7–0.8 GB a day for people who also have Wi-Fi at home and at work.
What people buy: 3 GB median. Cellesim's 2026 traveller report (719 purchases, March to June 2026) found a median plan size of 3 GB and a mean of 6.7 GB. That is what is bought, not what is used; set against the 4.7 GB median above, the 3 GB buyers are the ones who run out.

The pattern across all three is the same: a travel day is a home day with more navigation and less Wi-Fi, and it lands around a gigabyte. The exceptions are video and hotspotting a laptop, which can triple it.

How much data each app uses per hour

Official figures where the app publishes one, independent measurements where it does not. The “1 GB lasts” column is the one to remember.

App or task	Data per hour	1 GB lasts	Figure from
WhatsApp, iMessage, Signal text	under 5 MB	weeks	estimate (1–5 KB per message)
Email without attachments	5–10 MB	100+ hours	estimate
Google Maps navigation, standard map	3–5 MB	200+ hours	independent tests
Google Maps with live traffic	7–10 MB	100+ hours	independent tests
Google Maps satellite view	15–20 MB	50 hours	independent tests
WhatsApp voice call	20–30 MB	33+ hours	estimate (0.3–0.5 MB per min)
Spotify, Normal quality (96 kbps)	about 43 MB	23 hours	calculated from Spotify's official bitrate
Web browsing	60–75 MB	13–16 hours	estimate
Spotify, Very High (320 kbps)	about 144 MB	7 hours	calculated from Spotify's official bitrate
YouTube, 480p to 1080p on mobile	90–170 MB measured; up to 2–4 GB by bitrate	6–11 hours measured	SlashGear 1-hour test; Android Authority bitrate estimate
FaceTime video	180–250 MB	4–5 hours	estimate (3–4 MB per min)
Netflix, Automatic (mobile default)	about 250 MB	4 hours	Netflix help centre, official
WhatsApp video call	about 300 MB	3 hours	estimate (about 5 MB per min)
TikTok or Instagram Reels, auto quality	320–840 MB	1–3 hours	SlashGear 1-hour test; vendor guides
Zoom 1:1 call, 720p	about 1.1 GB	55 minutes	calculated from Zoom's official 1.2 Mbps each way
Netflix, Maximum Data	up to 3 GB	20 minutes	Netflix help centre, official

Compiled 3 November 2026. Official: Netflix (help.netflix.com/en/node/87), Spotify audio-quality page, Zoom bandwidth requirements. Measured: SlashGear one-hour YouTube and TikTok tests, 2026. Estimates are the consensus of independent guides and vary with codec, screen size and signal quality.

Sources for the official rows: Netflix's cellular data usage settings (Automatic about 4 hours per GB, Save Data about 6 hours per GB, Maximum Data 1 GB per 20 minutes); Spotify's audio quality page (Low 24 kbps, Normal 96, High 160, Very High 320); and Zoom's bandwidth requirements (1.2 Mbps up and down for 720p). The YouTube spread is real: a one-hour SlashGear test measured 170 MB at 1080p, while Android Authority's bitrate-based estimate is 2.5–4.1 GB. Mobile playback on Auto sits far closer to the measured figure.

A traveller scanning a QR code with a phone — Maps, translation, tickets and messaging are cheap. The budget goes on video, and on a laptop quietly syncing over a hotspot. Photo: U.S. Fish and Wildlife Service / Wikimedia Commons / Public domain

Three traveller profiles

Profile	A typical day	Per day	7 days	14 days	30 days
Light	Maps 2 h, messaging, email, a few searches, photos uploaded on hotel Wi-Fi	0.3–0.5 GB	3 GB	5 GB	10 GB
Normal	Maps 3 h, social feeds 1 h, music 2 h, a 20-minute video call, photos uploaded as you go	0.8–1.2 GB	5–10 GB	10–20 GB	20–30 GB
Heavy	All of the above plus an hour of streaming video or a work call on cellular, or a laptop on hotspot	2–3 GB	20 GB	30–50 GB	unlimited or 50 GB+

Per-day figures from the app table above; the plan columns round up to the next common plan size. The Normal row matches the measured 0.7–1 GB a day.

Two things push a Normal traveller into Heavy without any change in habits: automatic photo backup running over cellular, and a laptop on the phone's hotspot pulling OS updates and cloud sync. Both are fixed with a setting rather than a bigger plan.

What burns data without you noticing

Leak	What it does	Where to switch it off
Photo backup over cellular	iCloud Photos or Google Photos uploads every shot, at full size, the moment you take it	iPhone: Settings › Apps › Photos › Cellular Data. Google Photos: Backup settings › Mobile data usage
Wi-Fi Assist / Connectivity Assist	Switches to cellular when hotel Wi-Fi gets weak, silently	iOS 26 and earlier: Settings › Cellular, bottom of the list. iOS 27: Settings › Wi-Fi › Connectivity Assist. Apple notes it is not used while roaming or in Low Data Mode
Background App Refresh	Apps refresh feeds and sync while closed	iPhone: Settings › General › Background App Refresh › Wi-Fi only. Android: Data Saver under Network & internet
Video autoplay in feeds	Instagram, X and Facebook preload video as you scroll	Instagram: Settings › Data usage and media quality › Data Saver. YouTube: Settings › Video quality preferences
App and OS updates	Multi-hundred-megabyte downloads on cellular	iPhone: Settings › App Store › Automatic Downloads, cellular off. Android: Play Store › Network preferences › Over Wi-Fi only
Low Data Mode not on	The one switch that pauses most of the above at once	iPhone: Settings › Cellular › (the travel line) › Cellular Data Options › Low Data Mode. Android: Settings › Network & internet › Data Saver

Paths from Apple's and Google's support pages, checked November 2026. On a dual-SIM iPhone, set Low Data Mode on the travel eSIM line specifically.

Apple's Low Data Mode page says the mode “pauses automatic updates and background tasks” when the phone is not on Wi-Fi, which is most of a travel day. Turn it on for the travel line the day you install the eSIM and the leaks above mostly stop. To see which app is actually spending the budget, use the per-app list described in how to check data usage on iPhone and Android.

Which plan size to buy by trip length

Trip length	Light	Normal	Heavy or working
Weekend (2–3 days)	1 GB	3 GB	5–10 GB
One week	3 GB	5–10 GB	20 GB
Two weeks	5 GB	10–20 GB	30–50 GB
One month	10 GB	20–30 GB	unlimited

Pick the column that matches your profile, then buy the next size up if two columns both look right. Most YonoSIM plans can be topped up without reinstalling, so the cost of guessing low is a few taps, not a new eSIM.

The study's 39% unused figure is the argument for buying a size up, not against it. Unused data costs the difference between two plan sizes. Running out costs a roaming day pass, or an afternoon offline in a city you do not know. If a plan is never activated, it is refundable within 30 days, so an over-cautious purchase that stays sealed costs nothing.

Unlimited plans: when they are worth it

An unlimited plan makes sense in the Heavy row and almost nowhere else. Most unlimited travel plans are unlimited at full speed up to a daily allowance and then throttled, and several providers cap hotspot use on them. For a Normal traveller a 10–20 GB plan is cheaper and has no fine print; the comparison is in standard vs unlimited eSIM plans. Our own unlimited terms are on the fair usage policy page.

FAQ

QHow much data do I need per day when travelling?

APlan on 1 GB a day if you navigate, message, search and post a few photos, and 2 GB a day if you stream video or take work video calls on cellular. The only measured travel study we found, 82 Japan eSIMs tracked by Travelsim Asia in 2026, put the median trip at 4.7 GB: about 1 GB a day on short trips and about 0.7 GB a day on trips of a week or more, because hotel Wi-Fi carries the evening. Ericsson's June 2026 Mobility Report puts the global at-home average at 22 GB a month, which is 0.7 GB a day with Wi-Fi at home and work.

QIs 1 GB a day enough for travel?

AYes for a normal trip. One gigabyte covers roughly 3 hours of Google Maps navigation, 30 minutes of WhatsApp video, 2 hours of music streaming, an hour of web browsing and a day of messaging, with room to spare. It is not enough if you watch Netflix or YouTube on cellular: Netflix's own figure for its Automatic mobile setting is about 4 hours per GB, so one film takes half the day's budget.

QHow much data does Google Maps use?

AIndependent tests put turn-by-turn navigation at roughly 3–5 MB per hour on the standard map, 7–10 MB per hour with live traffic, and 15–20 MB per hour in satellite view. Google publishes no official figure. Downloading an offline map of your destination over Wi-Fi before you go removes most of it; Google says offline maps last a year but do not include live traffic.

QHow much data does WhatsApp use?

AText messages are negligible, about 1–5 KB each. Voice calls run roughly 0.3–0.5 MB per minute, so an hour is 20–30 MB. Video calls are the expensive part at around 5 MB per minute, or 300 MB an hour. WhatsApp's own setting to cut this is Settings, Storage and data, Use less data for calls.

QHow much data does Netflix or YouTube use per hour?

ANetflix's help centre gives the official numbers for its mobile app: the default Automatic setting uses about 1 GB every 4 hours, Save Data stretches that to about 6 hours per GB, and Maximum Data can use 1 GB every 20 minutes. YouTube has no official figure; a 2026 one-hour test measured about 93 MB at 480p, 107 MB at 720p and 170 MB at 1080p, while bitrate-based estimates run several times higher, so budget 0.2–1 GB an hour depending on quality.

QShould I buy a bigger plan than I think I need?

AYes, one size up. In the Travelsim Asia study about 39% of purchased data went unused, which sounds wasteful until you compare it with the alternative: running out on the last day and paying a roaming day pass. Plan sizes step up in small increments, so the extra few gigabytes usually cost less than one day of roaming, and a plan that is never activated is refundable within 30 days.

Related guides

Originally published on www.yonosim.com/en/blog/how-much-data-do-i-need-for-travel-2026 · YonoSIM — You Only Need One SIM