Written byFizza Butool ZaidiIELTS teacher for 10+ years, PTE for 5Updated 30 October 2026
The room scan, step by step
Open the DET desktop app, sign in and continue until told to set up your phone. Scan the QR code with your phone's camera, charge the phone fully, and turn on Do Not Disturb (airplane mode is fine if Wi-Fi stays on). Allow access to motion and camera, stand and point the phone at your computer with the whole screen and keyboard in frame, then turn slowly in a full circle. Finish by pointing the phone down at the keyboard and moving it slowly forward over the screen to show what is behind it (help centre).
Some test takers now use the DET mobile app instead of the phone browser for setup. It is being rolled out over several weeks; if you are not directed to download it, you do not need it yet (help centre).
The ear scan
Remove glasses and any clip-on or magnetic earrings (glasses can go back on afterwards). Point the phone at one ear so it sits in the centre of the frame shown in the desktop app, then touch the phone to your ear as if on a call, and repeat for the other ear (help centre). If you use hearing aids, request an accommodation before testing; with a religious head covering, you do not need to show your ears.
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Why scans fail
Duolingo's failure notices point to the same few causes (room, behind computer, ears).
| Scan | Common cause | Fix next time |
|---|---|---|
| 360° room | Video missing, blocked, or pointed at walls or ceiling | Keep screen and keyboard in frame and follow the on-screen arrow slowly |
| Behind the computer | Phone pointed at the floor or walls, or moved too fast | Hold steady and move fully over the top of the screen |
| Ears | Ear covered by hair, a hat or clothing, or face out of webcam frame | Use good light, uncover the whole ear, keep your face on camera |
What happens after a failed scan
A room scan that does not clearly capture 360 degrees invalidates the result as a technical error, and you can retake at no extra cost if your credit still has attempts (help centre). A missing or obscured ear or behind-the-computer scan also invalidates the test. Other room and device rules are in our Duolingo English Test rules guide. Rules and fees change. Check the test owner's own page before you book or pay. This guide is general information, not official advice from ETS or Duolingo.
Frequently asked questions
Why does Duolingo scan my ears?+
To confirm you are not using earbuds. You scan both ears with your phone before the test.
Can I stay seated for the Duolingo room scan?+
Only if you have a rotating chair. Otherwise Duolingo asks you to stand and turn in a full circle.
What if my Duolingo room scan fails?+
The result is invalidated as a technical error, and you can retake free if attempts remain on your credit.
Do I have to download the DET mobile app?+
Only if the setup directs you to. It is being rolled out gradually and replaces the phone browser for setup.
Can I wear glasses during the ear scan?+
Remove them for the ear scan. You can put them back on once it is complete.
Keep reading
Related
- Duolingo English Test rules
- Duolingo English Test not certified
- Duolingo test technical problems
- Duolingo English Test accommodations
- All 3112 guides
Guide updated on 30 October 2026. Individual prices and policies may have earlier observation dates. Confirm current details on the linked official pages before you book or apply.
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