The Duolingo English Test changed a lot in 2025–2026: a mandatory second camera, new Interactive Speaking and Interactive Writing formats, and stricter invalidation rules. Most prep guides haven’t caught up — this one has.
This DET preparation guide for 2026 gives you a 4-week study plan, a step-by-step 2-camera setup walkthrough, the invalidation traps that void tests, and section-wise strategies for every question type.
First: The 2026 Rules That Void Tests
- Second camera fails — phone falls, dies, or loses connection mid-test (keep it plugged in!)
- Headphones/earbuds worn — speakers only; ears must stay visible the whole time
- Looking away repeatedly — eyes must stay on screen
- Someone enters the room or you speak to someone
- Memorized responses — the AI detects scripted answers
- Predictive text / Grammarly left on — turn them off
One appeal is allowed (~4 business days); free-retake eligibility depends on the cause.
The 2-Camera Setup: Step by Step
- Primary: your computer’s webcam, facing you, in a quiet private room
- Secondary: a smartphone or tablet in landscape, positioned at your side so it shows your hands, keyboard and screen
- Pair it by scanning the QR code shown during setup
- Plug the phone into a charger — a dead phone mid-test = invalidation
- Turn on Do Not Disturb — a call or notification can break the feed
- Do the full room scan slowly: desk, walls, under-desk, and your ears visible
4-Week DET Study Plan
| Week | Focus | Daily work (45–60 min) |
|---|---|---|
| 1 | Diagnose | Take the free official practice test; identify weakest subscore (usually Production); start typing drills toward 40 WPM |
| 2 | Production | Record yourself daily: Speak About the Photo, Read Then Speak, Interactive Speaking turns; review recordings for fluency gaps |
| 3 | Literacy + Comprehension | Timed Read and Complete drills, Interactive Reading sets, Listen and Type with spelling checks |
| 4 | Simulate | Full timed mock tests with the 2-camera setup; test-day checklist; light review only in final 2 days |
Section-Wise Strategy
Speaking (Conversation subscore)
- Use ALL the time given — stopping early wastes scorable speech
- Interactive Speaking: 35 seconds per turn, 6–8 turns — answer naturally like a real conversation; never recite memorized scripts
- Record and review yourself — you’ll catch filler words and pronunciation slips you’d never notice live
Writing (Production subscore)
- Interactive Writing: 5 minutes for the direct answer, then 3 for the follow-up — save one good idea for the follow-up
- Write About the Photo: 1 minute — aim for 2–3 complete, varied sentences
- Phone typists: switch to a physical keyboard and drill to 40+ WPM (keybr.com, timed essays)
Reading & Listening
- Read and Select: ~5 seconds per set — decide fast, don’t overthink
- Summarize the Conversation: ~75 seconds — jot 3 key points while listening, then speak
- Partial credit is real — attempt every blank and every question; guesses can only help
Official (Free) Prep Resources
- englishtest.duolingo.com/quick — free quick practice test
- englishtest.duolingo.com/readiness — system and setup check
- Official Test Taker Guide (PDF) — the rules, straight from Duolingo
- DETPractice.com — large third-party question bank (Gold Partner)
Test-Day Checklist
- Physical passport as ID (in India, Aadhaar is not accepted)
- Phone charged + plugged in, Do Not Disturb on, paired via QR
- Predictive text, autocorrect and Grammarly off
- Room locked, desk clear, ears visible, no headphones
- Close every app except the test browser window
FAQs
How long should I prepare for the Duolingo English Test?
4 weeks at 45–60 minutes a day is enough for most test-takers — less if your English is already strong, more if Production (speaking/writing) is weak.
Do I really need a second camera?
Yes — since 2026 the secondary camera (phone/tablet in landscape showing your hands, keyboard and screen) is mandatory. Without it your test won’t be certified.
Can I wear headphones during the DET?
No. Headphones and earbuds are banned — use speakers, and keep your ears visible throughout.
What happens if my test isn’t certified?
You get one appeal (decided in ~4 business days). Depending on the cause, you may qualify for a free retake — otherwise it’s a new $70 purchase.
Is 40 WPM typing really necessary?
It’s the consensus threshold from prep coaches: below it, timed writing tasks (especially Interactive Writing) become a race against the clock rather than a test of English.
Next steps: every question type explained, the 2026 fee breakdown, and UK universities that accept DET.
