How to use your phone offline while traveling

The moment you need your phone most on a trip is usually the moment it has no signal: the rental car counter after a long flight, the trailhead an hour past the last town, the train station in a country where your data plan costs a fortune. A little preparation the night before turns a phone from a brick into a map, a translator and a wallet that work without any connection at all.

Download your maps before you leave Wi-Fi

Both major map apps can save areas for offline use.

Apple Maps (iPhone): tap your picture or initials next to the search field, tap Offline Maps, then add an area and adjust its size before downloading. You can also search for a place and tap Download if it is offered. Maps shows the file size first, which helps if storage is tight. Offline maps are only available in some regions, and they do not sync between your devices, so download them on the phone you will actually carry.

Google Maps (iPhone and Android): search for a place, tap More, then Download offline map. On Android you can store offline maps on an SD card. Google Maps tries to refresh an offline area automatically when it is close to expiring and you are on Wi-Fi. One important limit: offline, Google Maps gives driving directions only. Walking, cycling and transit routes, live traffic and Street View need a connection.

Download a generous area that includes the airport, your lodging and every drive in between. A map that ends five miles short of where you're sleeping is not much of a map.

Translation and paperwork, offline

Translation. Google Translate lets you download languages for offline use from its settings, typically tens of megabytes each. On iPhone, Apple's Translate app can download languages for on-device translation: open Settings, tap Apps, tap Translate, then Languages. Offline translation may be a little less accurate than online, but it is far better than pointing at a menu.

Tickets and passes. Add boarding passes, train tickets and event tickets to Apple Wallet or Google Wallet as soon as you get them, instead of relying on an email or a website that needs to load at the gate. Take a screenshot of anything that can't go in the wallet, such as hotel confirmations, rental car numbers and the address of your first night written in the local language.

The rule for travel is simple: anything you'll need in the first hour after landing should already be on your phone before you board.

Battery and airplane mode

With no signal, a phone burns battery searching for one. If you are out of coverage for a while, turn on airplane mode. On most phones you can then turn Wi-Fi and Bluetooth back on individually, and GPS keeps working, so offline maps still show where you are. Lower screen brightness, close navigation when you're not moving, and carry a small battery pack. Cold drains batteries fast, so keep the phone in an inside pocket on winter hikes.

Apps that don't need a signal

Before a trip, open each app you plan to use with airplane mode on. You'll quickly find which ones fall apart. The ones worth keeping are those designed to work without a network, a choice we explain in designing for offline-first.

If your trip includes US national parks, where coverage is often poor, Stampr is built for exactly that. All 63 national parks are bundled in the app, so you can browse park details and log a visit with date, photos and notes with no network at all. Each visit turns a gray outline into a full-color stamp, and later you can see your trips on a map and export your whole passport as a PDF. It is free, with no account.

Prepare once, and the best parts of the trip can happen right where the signal ends.