How to Detect Hidden Cameras & Spy Devices Using Your iPhone

Yes, you can use your iPhone to detect hidden cameras and spy devices — all without needing any fancy gear. With a combination of your iPhone’s flashlight, camera, and a few simple apps, you can spot suspicious devices and protect your privacy whether you’re in a hotel, Airbnb, office, or even your own home.
Here’s how it works — and what to look for.
1. Use Your iPhone’s Camera to Spot Infrared Lights
Most hidden cameras use infrared (IR) light to record in the dark. While our eyes can’t see IR light, your iPhone camera can. Here’s how to check:
Steps:
- Turn off the lights in the room.
- Open your iPhone’s camera app (preferably the front-facing camera, which is more sensitive to IR).
- Slowly scan the room and look for small, glowing purple or red dots — that could be an infrared light from a camera lens.
Common hiding spots:
- Smoke detectors
- Air purifiers
- Wall clocks
- Alarm clocks
- TV boxes
- Electrical outlets
2. Use the Flashlight Trick to Catch Hidden Lenses
Hidden camera lenses are made of glass and reflect light. You can catch that reflection using your iPhone flashlight.
Steps:
- Turn off the room’s main lights.
- Turn on your iPhone flashlight.
- Slowly scan suspicious objects or small holes.
- Look for any unusual reflections or glints, which could indicate a camera lens.
Pay close attention to:
- Mirrors (especially if they seem out of place)
- Smoke detectors
- Decorative objects
- Small holes in the wall or electronics
3. Download a Network Scanner App
If a hidden camera is Wi-Fi enabled, you might be able to spot it on the same network you’re connected to. Apps like Fing or Network Analyzer can show all the devices currently on your Wi-Fi.
What to do:
- Connect your iPhone to the local Wi-Fi.
- Open the app and scan the network.
- Look for devices with unusual names, brands like “Esp32,” “IP Camera,” or anything that doesn’t match typical devices (like phones or smart TVs).
If you spot something suspicious, disconnect from the network and contact the property owner or authorities.
4. Use Radio Frequency (RF) Detector Apps
While not as accurate as professional RF scanners, some iPhone apps can detect unusual electromagnetic fields from spy devices — especially if they’re transmitting data wirelessly.
Search the App Store for:
- “Hidden device detector”
- “Bug detector”
- “EMF scanner”
These apps work best when used near suspicious areas, like vents, clocks, smoke detectors, or USB chargers that don’t seem to serve a real purpose.
5. Stay Smart & Aware
Even with your iPhone tools, your best defense is awareness. Trust your gut. If something feels off — like a misplaced alarm clock or an object that seems heavier than it should — check it.
Pro tips:
- Cover suspicious holes or lights with tape or cloth
- Unplug unfamiliar electronic devices
- Avoid changing clothes in direct view of unusual objects
- Use your phone’s flashlight to inspect mirrors — check if they’re one-way
You don’t need spy-level tech to protect your privacy — just your iPhone and a few minutes of smart searching. By using your camera, flashlight, and a couple of helpful apps, you can uncover hidden cameras and devices that might otherwise go unnoticed. Stay alert, stay safe, and always trust your instincts when something doesn’t feel right.