Talklation does not publish one universal offline language list because the real answer comes from the phone in your hand. Language availability can change with the operating-system version, device model, installed resources, and the translation service supplied by the platform or device manufacturer.
A source language must support both on-device speech recognition and on-device translation. A target language only needs translation support for the selected pair. Talklation combines those checks and shows only choices that the current device reports as usable for the requested direction.
On Apple platforms, TranslationSession can work with languages installed on the device and exposes whether a session is ready or can request downloads. On Android, TranslationManager exposes the available source and target specifications, while SpeechRecognizer separately reports whether on-device recognition is available for spoken input.
This means two phones can show different choices even when both run Talklation. A newer operating-system release may add a language, while an Android device without an OEM on-device translation service may expose fewer pairs. The website therefore avoids claiming that every advertised language works on every supported device.
To check a pair, open the language picker on the actual phone, choose the source and target, and read the readiness message. If Talklation offers a preparation action, complete it on a stable connection. If the pair remains unavailable, select another supported direction or use a different device.
For an important trip or appointment, check every direction you expect to use before leaving. A successful short offline test is stronger evidence than a general language chart because it verifies the exact hardware, operating system, installed resources, and speech language together.
