How to translate without internet: an offline voice translator guide

By Spoken · October 17, 2026

Planes, subway platforms, mountain villages and expensive roaming plans all have one thing in common: the moment you most need a translator is often the moment you have no signal. An offline translator keeps working, but only if you set it up before you lose the connection.

What works offline, and what needs a connection

Offline translation runs entirely on your phone. That makes it private and dependable, but on-device models are smaller than the cloud models Spoken uses online. Treat offline mode as your safety net, not a like-for-like replacement.

Set up offline translation before you go

1. Open Manage Languages. In Spoken, go to Settings → Offline translation → Manage Languages.
2. Download your languages. Download each language you expect to use, for example Japanese for a trip to Japan. Do it on Wi-Fi; each download takes storage space.
3. Let your phone add speech recognition. On iPhone with iOS 26 or later, Spoken installs the speech model for you. On older iOS versions, the language must be added under iPhone Settings → General → Keyboard → Dictation Languages; Spoken shows the steps when needed. On Android, Spoken uses the phone’s own on-device speech recognition, so support can vary by device.
4. Add Offline voices if you want spoken output. The Offline voices card at the top of Manage Languages downloads an optional voice pack of about 124 MB. If a download is interrupted, it resumes where it stopped.
5. Test in airplane mode. Turn on airplane mode, open Talk and run a short conversation in your pair. Five minutes at home beats discovering a missing model at the border.

How an offline conversation works

Spoken checks for a real internet connection rather than just a Wi-Fi icon, so a café hotspot that isn’t actually online counts as offline too. When that happens, the screen shows Offline, and Offline · Spanish ready (or the language of your pair) once that language is downloaded. The language picker then lists only the languages you have on the device.

Because automatic language detection needs the cloud, offline Talk gives you two buttons: one for each language. Hold the button for whoever is speaking, let go when they finish, and Spoken shows the translation and reads it aloud if a voice is available. When your connection comes back, Spoken returns to online mode automatically.

Camera translation can use your downloaded languages too, which helps with menus, signs and tickets when you have no data.

Tips for better offline translations

• Keep sentences short. “Where is platform 4?” translates more reliably on-device than a long sentence with three clauses.
• Check numbers on screen. Times, prices and platform numbers are worth reading, not just hearing.
• Speak close to the phone. Offline recognition is more sensitive to background noise.
• Keep the downloads. Removing a language to free space means you can’t use it offline until you download it again.

When it’s worth finding a connection

Offline mode is built for short exchanges. For a long tour, a lecture or a meeting, online Listen gives you continuous translated captions and a saved transcript; see how to translate a lecture live. For a back-and-forth with full context and hands-free turn-taking, read our two-way voice translator guide for travel.