How to Enable and Set Up Screen Distance on iPhone and iPad to Reduce Eye Strain

Holding smartphones and tablets too close to your face for prolonged periods significantly increases the risk of asthenopia (digital eye strain) and contributes to the progression of myopia (short-sightedness), especially among children and young adults. To combat this ergonomic issue, Apple introduced Screen Distance across iOS and iPadOS. By using the front-facing TrueDepth camera system—the same sensor suite powering Face ID—Screen Distance continuously evaluates whether your device is held closer than the recommended 30 centimetres (12 inches) and gently prompts you to reposition it.

How Screen Distance Operates on Apple Devices

Screen Distance functions as an integrated wellness feature within Screen Time:

• Continuous Proximity Measurement: The TrueDepth camera measures the physical distance between your eyes and the display without capturing, storing, or transmitting photographic images or facial geometry.
• Full-Screen Intervention: If your iPhone or iPad remains closer than 30 cm for an extended duration, the operating system overlays a full-screen shield reading “iPhone is Too Close” or “iPad is Too Close”.
• Effortless Dismissal: Once you move the device back to an arm’s length distance, a checkmark icon appears, and a blue Continue button unlocks the screen so you can resume your task.

Hardware and Software Compatibility Requirements

Because Screen Distance relies on physical depth-sensing hardware rather than simple software algorithms, ensure your hardware meets the following standards:

• Operating System: iOS 17 / iPadOS 17 or later (including iOS 18 and iPadOS 18).
• Supported iPhone Models: iPhone XS and all newer models equipped with Face ID.
• Supported iPad Models: iPad Pro 11-inch (all generations) and iPad Pro 12.9-inch (3rd generation or later) equipped with TrueDepth sensors.

Step 1: Enabling Screen Distance in Settings

Screen Distance is disabled by default for adult Apple Accounts and enabled automatically for children under 13 in Family Sharing groups. Follow these steps to activate it manually:

1. Open the Settings app on your iPhone or iPad.
2. Scroll down and tap Screen Time.
3. Under the Limit Usage section, select Screen Distance.
4. Toggle the switch next to Screen Distance to the On position (green).

If prompted, read through the introductory briefing outlining vision health recommendations, then tap Continue to finalise the configuration.

Step 2: Configuring Screen Distance for Children via Family Sharing

If you manage child accounts through Apple Family Sharing, you can enforce Screen Distance remotely to instil healthy screen habits from an early age:

1. Open Settings on the parent or organiser’s iPhone or iPad.
2. Navigate to Screen Time.
3. Scroll down to the Family section and tap your child’s name.
4. Tap Screen Distance and verify that the feature toggle is switched on.
5. Ensure you have set a Screen Time Passcode under the child’s profile to prevent them from disabling the feature independently.

Step 3: Responding to the “iPhone is Too Close” Prompt

When you hold the screen within 30 cm for roughly five minutes or longer, your screen will blur and present the warning screen. Here is how to handle the alert:

1. Extend your arm slightly to move the screen at least 30 cm (12 inches) away from your eyes.
2. Keep the device pointed towards your face so the TrueDepth sensor registers the increased distance.
3. Wait one to two seconds until the illustration changes to a green checkmark indicating “iPhone is at a safe distance”.
4. Tap the blue Continue button at the bottom of the screen to return immediately to your active app or video.

Troubleshooting False Triggers or Unresponsive Sensors

If Screen Distance triggers unexpectedly or fails to detect when you move the device away, apply these targeted fixes:

• Clean the TrueDepth Sensor Bar: Dust, fingerprints, or screen protector cut-out misalignment over the top notch or Dynamic Island can obstruct infrared depth emitters. Wipe the sensor glass with a clean lint-free cloth.
• Avoid Obscuring the Camera with Hands: In landscape gaming or video viewing, ensure your thumbs do not cover the camera notch or tablet bezel.
• Ensure Adequate Facial Lighting: While TrueDepth infrared sensors operate in complete darkness, extreme backlighting can occasionally distort depth readings.
• Restart the Device: A brief restart refreshes the background CoreMotion and Vision framework daemons responsible for proximity calculations.

Maintaining Healthy Viewing Habits

Screen Distance serves as an automated safeguard, but pairing it with proven optical habits delivers the best long-term protection against fatigue. Follow the 20-20-20 rule: every 20 minutes, shift your focus to an object situated at least 20 feet away for 20 seconds. Combining this practice with TrueDepth distance alerts ensures comfortable, strain-free viewing across all your mobile workflows.