Local display
Wearable display glasses can show video from a directly connected device without the glasses themselves needing Wi-Fi. The source device may still need internet for whatever app or game you are using.
Can smart glasses work without Wi-Fi?
Yes, for some functions. But “offline” varies by model and feature.
Camera and local media
Some camera glasses can capture photos or video locally even when internet access is unavailable. Syncing, sharing or cloud AI may still require a phone or network later.
Offline translation exists
Rokid documents selected offline translation languages. Its setup still requires app pairing/activation and downloading the language model first.
Cloud AI usually needs connectivity
Live AI answers, cloud vision models, online translation and web-based information generally require an internet path through Wi-Fi or a connected phone.
Practical rule
Separate the question into three layers: can the hardware turn on, can the core local feature run, and can the cloud service respond? Those can have three different answers.