Android apps that still work when the signal does not
Airplane mode, an underground train, a mountain road, a data plan that just ran out: the apps that keep working are the ones that pulled their content down while you were still on WiFi. That download step is the part people forget, so each pick below says what to prepare and when.
Set these up before you leave
Offline features almost always need one action on WiFi first. Ten minutes the night before is the difference between a usable phone and a brick with a signal bar.
- Download the maps for where you are going Offline map areas expire after about a month, so refresh them the day before rather than reusing last year's.
- Queue playlists and podcasts Downloads pause silently on mobile data if you left the WiFi-only switch on.
- Pick the video, not just the series Streaming apps download individual episodes, and a partial download plays for eight minutes and stops.
- Add the language pack Translation apps download a model per language, and the default is online-only.
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Music and video you already have
Two streaming apps with real offline modes, and one player for the files that live on the phone itself.
Downloads work on the free tier for podcasts and on Premium for music. The catch is the thirty-day rule: the app has to see the internet once a month or the downloads lock.
The most reliable offline downloads of any streaming app. Set the video quality to Standard unless you are watching on a tablet, since High roughly doubles the file size for a screen that cannot show the difference.
For anything already on the device. It plays the formats the built-in gallery refuses and remembers where you stopped, which matters when the flight lands mid-episode.
Getting around with no data
Offline navigation is the single most useful thing you can prepare, and the one most people discover they forgot at the airport exit.
Needs a connection for its live traffic, which is the whole point of it, so treat it as the app for when you land and buy a local SIM rather than the one for the drive from the airport.
- Downloaded map areas and turn-by-turn directions
- Saved places and previously searched addresses
- Your own GPS position, which needs no data at all
- Live traffic and rerouting around a jam
- Business hours, reviews and phone numbers
- Public transport departures in real time
Reading and learning
A commute with no signal is the most reliable study time most people have, provided the app does not phone home for every lesson.
Lessons can be downloaded per unit, and the streak still counts once you reconnect. Practice works offline; the leaderboard does not.
Included as a warning rather than a recommendation: it is useless without a connection, so do not plan a flight around it.
Set the downloads running while you pack. The apps here all work offline, but none of them can fetch anything once the signal is gone.
Frequently asked questions
Do offline downloads expire?
Usually yes. Streaming licences typically last thirty days, or forty-eight hours after you press play, and offline map areas expire after about a month. Refresh them the day before a trip rather than relying on an old download.
Does airplane mode stop GPS?
No. GPS is a receiver and works in airplane mode. What stops is the assisted-GPS data that speeds up the first fix, so the initial lock can take a minute or two longer.
Why did my download stop halfway?
Almost always the WiFi-only setting plus a network change, or storage running out. Both fail quietly in most apps, so check the download list rather than assuming it finished.
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