6 Ways to Fix iPhone Auto-Lock Greyed Out

Have you ever found that the Auto-Lock option is greyed out on your iPhone, with the setting stuck at 30 seconds? This issue prevents you from adjusting how long your iPhone screen stays on, forcing you to tap the screen frequently to keep it from locking while browsing web pages, reading articles, or performing other tasks.

But why does the iPhone Auto-Lock setting become unavailable, and how can you fix it?

In this guide, we'll explore the common reasons why iPhone Auto-Lock is greyed out and walk you through 6 effective methods to restore the setting and customize your preferred screen timeout.

Why Is Auto Lock Greyed Out on iPhone

If the Auto-Lock option on your iPhone is greyed out or stuck at 30 seconds, you may wonder what is causing the problem. In most cases, this happens because Low Power Mode is enabled, which limits the Auto-Lock duration to 30 seconds to conserve battery life. Other possible causes include device management restrictions or temporary iOS issues.

Before trying more advanced troubleshooting methods, it's helpful to understand the common reasons behind this issue.

How to Fix iPhone Auto-Lock Greyed Out?

If your iPhone Auto-Lock option is greyed out or stuck at 30 seconds, don't worry. There are several ways to troubleshoot this issue, ranging from simple setting adjustments to more advanced iOS system repairs. Try the following methods in order, starting with the easiest solutions.

Method 1: Turn Off Low Power Mode

Low Power Mode is one of the first things you should check when the Auto-Lock option is greyed out on your iPhone. When Low Power Mode is enabled, iOS automatically sets the Auto-Lock duration to 30 seconds to conserve battery power. As a result, you won't be able to customize this setting until you turn off Low Power Mode.

Follow these steps to disable it:

• Step 1. Open the Settings app on your iPhone.
• Step 2. Scroll down and tap Battery > Power Mode.
• Step 3. Find Low Power Mode and toggle it off.

Once Low Power Mode is disabled, go to Settings > Display & Brightness > Auto-Lock and check whether you can select a different screen timeout.

Method 2: Restart Your iPhone

Sometimes, temporary iOS glitches can cause certain settings to become unresponsive or unavailable. Restarting your iPhone can refresh the system and help resolve these temporary issues without affecting your personal data.

Here's how to restart your iPhone:

• Step 1. Open Settings and tap General.
• Step 2. Scroll down and select Shut Down.
• Step 3. Drag the power-off slider to turn off your iPhone.
• Step 4. Wait a few seconds, then press and hold the Side button until the Apple logo appears.

Method 3: Update Your iPhone to the Latest iOS Version

If your iPhone Auto-Lock setting is still greyed out, an outdated or buggy iOS version may be contributing to the problem. Apple regularly releases software updates to fix bugs, improve system stability, and enhance device performance.

Updating your iPhone may help resolve software-related issues that affect the Auto-Lock setting.

Follow these steps to check for updates:

• Step 1. Open Settings on your iPhone.
• Step 2. Tap General.
• Step 3. Select Software Update.
• Step 4. If a new iOS version is available, tap the Update Now button and follow the on-screen instructions to update your iOS to the latest one.

Make sure your iPhone is connected to Wi-Fi and has sufficient battery power before updating. It's also recommended to back up your iPhone beforehand. After the update is complete, check whether the Auto-Lock option is working normally.

Method 4: Check Device Management Restrictions

If you're using an iPhone provided by your company or school, certain device management policies may restrict your ability to change system settings, including automatic locking behavior.

In this case, the greyed-out Auto-Lock option may be related to a configuration profile installed on your device.

Here's how to check whether your iPhone is managed:

• Step 1. Open Settings app on your iPhone.
• Step 2. Tap General option.
• Step 3. Scroll down and select VPN & Device Management.
• Step 4. Check whether any configuration profiles or mobile device management (MDM) profiles are installed.

Further Reading: How to Remove MDM Profile on iPhone With/Without Password

Method 5: Reset All Settings on Your iPhone

If none of the previous methods works, incorrect or corrupted system settings may be causing the Auto-Lock option to malfunction. In this case, resetting all settings may help restore the default iOS configuration and resolve the problem.

Don't worry: Reset All Settings does not delete your photos, videos, apps, messages, or other personal files. However, it will reset various preferences, including network settings, privacy settings, and display settings.

Here's how to reset all settings:

• Step 1. Open Settings on your iPhone.
• Step 2. Tap General.
• Step 3. Scroll down and select Transfer or Reset iPhone. Tap Reset.
• Step 4. Select Reset All Settings.
• Step 5. Enter your passcode if prompted and confirm your choice.

Method 6: Fix iPhone System Issues with TunesKit iOS System Recovery

If you've tried all the methods above but the Auto-Lock option is still greyed out, your iPhone may be experiencing a more complicated iOS system issue. In this situation, using a dedicated iOS repair tool may be another troubleshooting option. TunesKit iOS System Recovery specializes in fixing those hard issues on your iPhone, like Auto Lock is greyed out, Settings app icon missing, blue boxes on iPhone, wallpaper turns black all of a sudden, etc.

More than 150 types of issues can easily be handled with TunesKit iOS System Recovery, available for Mac and Windows, and the latest iOS versions and models. Only comes with a few steps, no additional operation on your iPhone required, then you can fix the issue by yourself.

Fix Auto-Lock Greyed Out with TunesKit

Repair iOS system issues that may cause Auto-Lock to grey out, with Standard Repair designed to preserve your iPhone data.

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How to save your Auto Lock with TunesKit iOS System Recovery? Here is the guide.

Step 1. Connect Your iPhone

Connect your device to the computer with a USB cable, and launch TunesKit iOS System Recovery. You can see iOS System Repair is displayed clearly, click on it. Select Other Problem. And click Start. Your iPhone should be well connected to your computer all the time until you finish fixing the iPhone Auto Lock greyed out problem on your iPhone.

Step 2. Select A Repair Type

Select Standard Repair. With Standard Repair, no data will be lost when you fix the issues on your iPhone. On the contrary, hard issues on your iPhone which cannot be fixed with Standard Repair can be easily fixed with Deep Repair. But, it comes with data loss, so if you select Deep Repair, go back up your iPhone data first.

Step 3. Download the Firmware Package

With the connection, TunesKit iOS System Recovery will automatically detect your device's info for you, please check them carefully. Next, click Download to install the firmware package.

Step 4. Start Repairing

Once the download is complete, click Start Standard Repair to begin the repair process. Keep your iPhone connected to the computer until the process finishes. After the repair is complete, restart your iPhone and check whether the Auto-Lock setting is accessible again.

Conclusion

If iPhone Auto-Lock is greyed out or stuck at 30 seconds, start by turning off Low Power Mode, then try restarting your iPhone, updating iOS, checking device management restrictions, or resetting all settings. If the issue is caused by a more complicated system problem, TunesKit iOS System Recovery can also be used as an additional troubleshooting option.