Deep Dive: Samsung Galaxy S26 Ultra Native Hardware Privacy Screen Technology

The First Security Gate: Micro "Louvers" (Bottom Grating)Imagine this: the light emitted by the OLED screen originally scatters in all directions (this is known as a Lambertian emission distribution).
Before enabling Privacy Mode: The first security gate is completely invisible. Because the refractive indices across all layers are exactly the same, all light passes through freely, allowing the person next to you to see the screen clearly.

After enabling Privacy Mode (Voltage ON): The liquid crystal layer instantly changes state, causing a sudden shift in its refractive index. At this moment, the microscopic grating (Diffraction Structure) carved into the surface of the first refractive layer reveals itself, acting like a series of microscopic "louvers." Those light rays trying to escape at wide angles to the left and right (the "first exit light" L1) are forced to change their path (undergoing diffraction) as they pass through these louvers, deviating from their original trajectory.

The Second Security Gate: Optical "Refraction Slopes" (Top Prism/Lens)The light rays, having had their paths scrambled by the first gate, immediately crash into the optical structure (Prism or Lens) at the top of the refractive index conversion layer. This is where the life or death of the light is decided:

The Snooper's Light (Trapped): Those wide-angle light rays originally destined for the snooper's eyes hit the prism slopes at extremely awkward angles. Because there is now a refractive index difference between the liquid crystals and the top refractive layer, this portion of light cannot penetrate the screen surface. Instead, it gets severely distorted or totally internally reflected, bouncing right back into the screen. It simply can't escape. So, to anyone sitting next to you, the screen looks completely blank.

The Owner's Light (Purified): The light rays heading straight forward (the "second exit light" L2) not only smoothly penetrate the prism slopes, but due to the optical refraction effect, their exit angle is further "squeezed" and compressed. This means the screen remains crystal clear when viewed head-on, but the effective viewing angle becomes extremely narrow, offering perfect privacy protection.

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Nothing Phone (4a)

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Google is set to restrict sideloading unverified apps on certified Android devices starting in September 2026 in select countries, with global expansion to follow.

Unverified apps can still be installed normally for now.

Following backlash over limiting Android's openness, Google added an "advanced flow" for experienced users to bypass the restrictions, with additional warnings and steps.

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iOS 26.4 Beta 2 has been released!

Size: 1gb to around 13gb

New in iOS 26.4 beta 2:

"Reduce Highlighting Effects" toggle under the "Display & Text Size" accessibility setting.

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iOS 26.4 Beta 2 finally gives the menus in Control Center a dark appearance.

iOS 26.4 Beta 2 makes the Edit Home Screen menu more transparent.

iOS 26.4 beta 2 didn’t kill Nugget… but something weird is happening.

The Nugget wallpaper fix (still beta) is still applying wallpapers.
Even the iPhone 17 Pro wallpaper now works.

But:
• Gyroscope wallpapers are still broken
• Behavior is inconsistent
• Some setups work, some don’t

If you’re updating, be careful.

Until the devs fully understand what Apple changed, this could break without warning.

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🚨 Camera Assistant Gets Major Update Ahead of Galaxy S26 Ultra

Version v4.5.00.19 just dropped and it’s BIG.

Highlights 👇🏻

• 24MP default mode can now be enabled
• Touch AF/AE in Pro Video
• Focus peaking in Pro modes
• Adjust autofocus speed & sensitivity
• Advanced Photo mode controls
• OIS control
• Video softening option
• 8K recording when mirroring
• Pro mode presets
• Customizable indicators
• TILTA wireless lens controller support
• Additional shooting modes