Under Display vs Punch Hole Cameras: Real Differences

Under-display cameras hide the front lens behind the screen, while punch-hole cameras cut a visible hole in the display. The punch-hole gives sharper photos today; the under-display camera offers a truly uninterrupted screen, but with a noticeable image-quality trade-off.

Background: Why the Front Camera Became a Design Problem

Smartphones once had thick top bezels that hid the front camera. As screens grew toward the edges, manufacturers moved the camera into a notch, then a teardrop, then a small hole. The punch-hole design became the standard around 2019–2020 because it allowed a nearly edge-to-edge display with minimal intrusion.

Under-display camera (UDC) technology was the next logical step: place the camera physically under the OLED panel, and let the screen itself act as a shutter when the camera is in use. The first commercial phones with UDCs appeared in 2020, but the technology is still maturing. The core problem is physics—light has to pass through the display layers before reaching the sensor, which reduces sharpness and color accuracy.

How Punch-Hole Cameras Work

A punch-hole camera is a conventional front-facing camera module mounted in a circular or pill-shaped cutout in the display. The hole is physically cut through the LCD or OLED panel, so the camera lens has a direct, unobstructed view of the subject.

Because there is no extra layer of glass or pixels in the way, the camera can use a normal sensor and lens. This means:

• Sharper images with more detail, especially in low light.
• Accurate colors and white balance.
• Fast autofocus and reliable face unlock.
• No processing artifacts like blurring or halos around bright areas.

The downside is purely aesthetic: the hole is always visible, and it interrupts full-screen video, games, and wallpapers. Some apps hide it with a black status bar, but that reduces usable screen area.

How Under-Display Cameras Work

Under-display cameras use a special OLED panel with a higher pixel density in the area above the camera, or with pixels that become transparent when the camera is active. The camera sits behind this semi-transparent region, and the screen still displays content there—usually a clock or battery icon—when the camera is off.

When you switch to the front camera, the pixels in that region either turn off or become more transparent, allowing light to reach the sensor. The phone then applies software corrections to compensate for the light lost and the diffraction caused by the pixel grid.

This design achieves a truly bezel-less, hole-free front, which is the main selling point. But the trade-offs are significant:

• Lower resolution and sharpness because light is scattered by the display layers.
• Reduced contrast and washed-out colors, especially in bright or backlit scenes.
• More noise in low-light shots, even with software noise reduction.
• Potential for ghosting or blurring around light sources due to diffraction.

Image Quality: The Crucial Difference

Punch-hole cameras produce photos that are comparable to the rear camera of a mid-range phone. They can handle most lighting conditions, and the image quality is consistent with what you expect from a modern smartphone front camera.

Under-display cameras, as of 2024, are best suited for basic video calls and the occasional selfie. In good daylight, a UDC can produce acceptable images, but they lack the fine detail and dynamic range of a punch-hole camera. In low light, the difference is stark: punch-hole cameras capture usable, relatively clean images, while UDC photos often appear soft, grainy, and slightly hazy.

Some manufacturers use higher-resolution sensors (e.g., 32 MP or 16 MP) and advanced algorithms to improve UDC output, but the physical limitation of light passing through the display remains. No software can fully recover the detail lost to diffraction.

Display Quality and Durability

The punch-hole design does not affect the display panel itself—the hole is cut out, so the surrounding pixels are normal. There is no impact on brightness, color accuracy, or touch response.

Under-display cameras require a special OLED panel with a lower pixel density in the camera area. This can cause a visible difference in sharpness or brightness when displaying text or images over that region. Some users notice a slight “screen door” effect or a faint grid pattern in that area, especially with white backgrounds.

In terms of durability, both designs are similar. The punch-hole is a physical cutout, but it is sealed and protected by the glass. The under-display area is part of the screen, so it is no more fragile. However, if the display cracks in the camera region, the camera may become unusable, and repair costs are typically higher for UDC phones because the display and camera are integrated.

Which One Should You Choose?

Your choice depends on what you value more: a clean, uninterrupted screen or a better front camera.

• Choose a punch-hole camera if: you take selfies, video call frequently, use face unlock, or care about camera quality. The small hole is a minor compromise for most people.
• Choose an under-display camera if: you watch a lot of full-screen video, play games, or simply dislike any notch or hole. You accept that the front camera is only good for occasional use and you are willing to trade image quality for aesthetics.

For most users, a punch-hole camera is the practical choice. The hole is small, and the camera works reliably in all conditions. Under-display cameras are still a niche feature for early adopters who prioritize design over functionality.

Common Problems and Misconceptions

Misconception: Under-display cameras are as good as regular cameras. This is false. The technology is improving, but as of now, UDC photos are visibly inferior. Manufacturers do not advertise this, but you can see it in side-by-side comparisons.

Problem: UDC displays can show a faint pattern. Some users report seeing a grid or a slightly different brightness in the camera area, especially when viewing light-colored content. This is a known limitation of the pixel layout.

Problem: Face unlock may be less reliable on UDC phones. Because the camera image is less sharp, face recognition software may struggle in low light or with certain angles. Some phones use additional sensors or software to compensate, but it is not always perfect.

Problem: UDC phones are more expensive. The technology is new and the panels are more complex, so UDC phones typically cost more than equivalent models with punch-hole cameras. This is a factor to consider if you are on a budget.

Frequently Asked Questions

Is the under-display camera visible when not in use? In most phones, the camera is hidden behind the display, but you may see a slight difference in the pixel density or brightness in that area. Some phones show a small circle or dot to indicate the camera location.

Can I use an under-display camera for video calls? Yes, but the image quality will be lower than a punch-hole camera. It is acceptable for casual calls, but not ideal for professional video conferencing.

Does the punch-hole affect touch sensitivity? No, the hole is a physical cutout, and the touch sensor is not present there. The surrounding area works normally.

Will under-display cameras replace punch-hole cameras? Eventually, yes, but not in the near future. The technology needs to improve significantly in image quality and reduce the display artifacts. Until then, punch-hole cameras remain the mainstream choice.

Are there any privacy concerns with under-display cameras? No, the camera is only active when you use it. However, some users worry that the camera is harder to see, so they might not know when it is on. Most phones have a small indicator light or a notification when the camera is in use.

Which is better for gaming? Under-display cameras are better for gaming because they offer a completely uninterrupted screen. Punch-hole cameras can be annoying in games that have controls near the top, but most games are designed to avoid that area.

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