7 Tips to Save Mobile Data While Travelling
Even unlimited plans have a daily fair-usage cap, and fixed-data plans can run out faster than you think — especially the first time you stream maps, take a video call from a bus, or let Instagram quietly upload a week's worth of photos in the background.
Here are seven practical things you can do to make your data go a lot further. The first three are the heavy hitters. The rest are small habits that add up over a two-week trip.
1. Download maps offline before you fly
This is the single biggest data-saver, and most people skip it. Both Google Maps and Apple Maps let you download a city or region for offline use — pan to the area, then tap "Download offline map" (Google) or hold the city name and pick "Download" (Apple). You'll still get turn-by-turn directions, search and points of interest, all using zero data.
A typical city download is 100–300 MB, so do it on home Wi-Fi the day before. If you're city-hopping, queue up a few at once.
2. Switch off background app refresh
Half the apps on your phone are quietly checking for updates, syncing photos, and refreshing feeds whenever they can — including when you're on cellular. Over a week abroad, that adds up to gigabytes you didn't actually use.
- iPhone: Settings → General → Background App Refresh → set to Wi-Fi only (or just turn off entirely).
- Android: Settings → Network & Internet → Data Saver → on. Also worth visiting Settings → Apps and disabling cellular data for the worst offenders.
3. Pause iCloud and Google Photos auto-upload
Holiday photos are the silent killer. A weekend's worth of photos and videos is easily 1–2 GB, and your phone happily uploads them the moment it gets a connection. Either pause auto-upload entirely for the trip, or restrict it to Wi-Fi so it waits until you're back at the hotel.
- iPhone: Settings → [your name] → iCloud → Photos → toggle off Cellular Data.
- Google Photos: open the app → profile picture → Photos settings → Backup → set "Use mobile data" to off.
4. Use Wi-Fi for the data-heavy stuff
Most hotels, cafés, airports and (increasingly) trains offer free Wi-Fi. Save the bandwidth-hungry tasks for those moments — video calls, app updates, large downloads, photo uploads, podcast and Netflix downloads.
One caution: public Wi-Fi isn't always secure. For anything sensitive (banking, work email), use a VPN or hotspot off your eSIM instead.
5. Drop streaming quality
On a phone screen, the difference between 1080p and 480p is basically invisible — but the data difference is enormous. A 30-minute Netflix episode in HD is around 1.1 GB. Same episode on standard quality? About 250 MB.
- YouTube: tap the gear icon while watching → Quality → 480p.
- Netflix: profile → Settings → Cellular Data Usage → Save Data.
- Spotify: Home → Settings → Audio Quality → Normal (or Low for podcasts).
6. Pre-download podcasts, music and reading material
The night before a flight or train journey, queue up everything you'll want en route while you're still on hotel Wi-Fi: podcasts, Spotify playlists, Kindle books, Netflix episodes, even Google Translate language packs. You'll get through them on the journey and never touch a megabyte of cellular data.
7. Watch your usage from day one
Most people only check their data once it's nearly gone. By then it's too late to change habits. Have a look at your usage on day two of the trip — it'll tell you whether you're on track or burning through it.
Both iPhone and Android show per-app cellular usage in Settings. You can also see your remaining balance on your idealesim account page any time, and we'll email you when you cross 80% of your plan so you've time to top up if needed.
One more thing: the right plan in the first place
Tips help, but the easiest data-save is buying the right amount up front. Our data calculator estimates how much you'll actually need based on what you do day-to-day — far more accurate than guessing. Pair it with the Find My Plan wizard for a quick recommendation.