Troubleshooting glasses

Most field issues fall into one of five buckets. Run through them in order.

Glasses won't pair

If a 6-digit code generates in the Dashboard but the glasses don't appear paired:

1. Confirm the glasses are on the right WiFi — they need internet to call the pairing endpoint. Settings on the glasses → Wi-Fi.
2. Make sure the Core App is open — the pairing listener runs inside the Core App, not at the OS level.
3. Code expired — codes are valid for 10 minutes. Generate a new one.
4. Wrong tenant — codes are tenant-scoped. Confirm the engineer is being paired against the right tenant in the Dashboard URL.

See Pairing your glasses for the happy-path walkthrough.

"No audio response from the assistant"

Check	What to do
Glasses speaker volume	Tilt your head and listen — sometimes the speaker is at minimum after charging. Long-press the right temple to cycle volume.
Session actually open	Say "Start training session" — you should hear a soft chime. No chime = session never opened.
Internet connection	Glasses status display shows a WiFi/LTE icon. If it's red, you've lost connection mid-session.
Voice channel	The WebRTC voice channel sometimes drops on flaky WiFi. Say "Stop training session" → "Start training session" to renegotiate.

"Assistant keeps mishearing me"

The mic is directional and tuned for the wearer's voice. Causes of misrecognition:

• Loud workshop / boiler-room noise — the mic's noise gate is generous but not magic. If you can barely hear yourself, the AI can't either.
• Strong accent / very low volume — speak at conversational volume, no need to shout (shouting actually distorts the mic).
• Multiple speakers — if a colleague is talking nearby, the AI can confuse who's speaking.

Workaround: pair a Bluetooth headset. The Core App treats any BT mic as authoritative when one is connected — picks up your voice cleanly even in a noisy plant room.

Video isn't recording / playback is empty

Check Sessions in the Dashboard:

• Session shows but playback is black — the camera was occluded or the lens was dirty. Wipe and re-try.
• Session shows but very short — the session ended early (battery died, glasses disconnected). Look at the session's "ended_at" timestamp vs "started_at" duration.
• Session never appears in the Dashboard — the upload is queued. If you're on LTE-via-tether, the upload can take longer than the session itself. Wait 10 minutes after returning to good WiFi.

Glasses won't turn on / battery dead

• INMO Air 3 charges fully in ~90 minutes. A 10-minute charge gives ~30 minutes of session time.
• Vuzix Blade 2 needs the supplied USB-C cable + 2A+ adapter. Cheap chargers can trickle without charging.

If the glasses won't power on after 10 minutes on the charger, contact support — see Contact.

Still stuck?

Email team@trainar.ai with the session ID (visible in the Dashboard URL when you open a session) and we'll dig into the device + session logs from our side.