Laptop webcams are usually poor — small sensors, low resolution, weak in dim light. The camera in your phone is far better, and using it as a webcam is a free upgrade.
The approaches
Built-in features. Recent Android versions include a USB webcam mode that works over a cable with no app. Apple devices offer Continuity Camera between iPhone and Mac. Check for these before installing anything — connect by USB and look for a webcam option in the USB preferences.
Third-party apps. Several pair a phone app with desktop software over USB or Wi-Fi. Most have a free tier with a watermark or resolution cap and a paid version without.
Wired or wireless
USB cable is more reliable, has lower latency, avoids Wi-Fi congestion and charges the phone during long calls. Wi-Fi is more flexible for positioning but can stutter and drains battery. For anything important, use a cable.
Positioning matters more than the camera
- Place the phone at eye level or slightly above — below eye level is unflattering.
- Keep it at arm's length; phone lenses distort faces up close.
- Use a small tripod or a stack of books.
- Leave a little space above your head rather than filling the frame with ceiling.
Lighting matters most of all
- Face a window — natural light in front of you is the best free lighting.
- Never sit with a window behind you, or you become a silhouette.
- In a dim room, put a lamp behind the camera pointing at you, not overhead.
Audio: use something else
If the phone is your camera, its microphone at arm's length picks up room echo. Wired earphones with an inline mic are better than most laptop microphones. Wireless earbuds work too, though watch battery on long calls.
Practical settings
- Use the rear camera where possible — it is substantially better than the front one.
- Enable Do Not Disturb so notifications do not appear or interrupt.
- Keep the phone plugged in; video drains battery fast and generates heat.
- Select the phone as the camera source in your call app before starting.
Do a test call before anything important — check framing, lighting, audio and that the connection holds for a typical call length.
