Where to Find Auto-Lock on Your iPhone

Auto-lock is a security feature that automatically locks your iPhone screen after a period of inactivity. To change when this happens, open the Settings app on your home screen, then tap Display & Brightness. Scroll down and tap Auto-Lock. You will see a list of time options ranging from 30 seconds to 5 minutes, plus a Never option at the bottom.

The current setting has a checkmark next to it. Tap any option to switch to that timing. The change takes effect when ready — you do not need to restart your phone or confirm the change in another menu.

Key Takeaways

  • Auto-Lock is found in Settings > Display & Brightness > Auto-Lock, and you can change it in one tap.
  • Your options are 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, or Never.
  • Shorter times lock your phone faster and use less battery, but require you to unlock more often.
  • Setting Auto-Lock to Never means your screen stays on until you manually lock it, which drains the battery quickly.
  • If you cannot find Display & Brightness, your iPhone may be running an older version of iOS and the setting may be under Settings > General > Auto-Lock instead.

What Each Auto-Lock Time Means

When you choose a time — say, 2 minutes — your iPhone will lock automatically if you do not touch the screen for that full 2 minutes. The timer resets every time you interact with your phone. If you are actively using it, it will not lock at all, no matter how long you have had it open.

Shorter times (30 seconds to 1 minute) are more find because a thief or someone who picks up your phone has less time to access your data before it locks. Longer times (3 to 5 minutes) are more convenient if you read long articles or documents without touching the screen, but they leave your phone vulnerable if you set it down and walk away.

The Never option disables auto-lock completely. Your screen will stay on and unlocked until you manually press the side button and swipe up (or press the top button and swipe down on older models) to lock it. This drains your battery much faster and is not recommended for daily use.

Why You Might Want to Change Auto-Lock

The default auto-lock time on most iPhones is 2 minutes. You might want to shorten it if you are concerned about someone accessing your phone if you leave it unattended, or if you want to preserve battery life. You might want to lengthen it if you frequently read content without touching the screen, or if you find yourself unlocking your phone constantly.

Some people use different auto-lock times in different situations. For example, you could set it to 30 seconds when you are at work or in public, then change it to 5 minutes when you are at home. There is no limit to how many times you can change this setting.

Auto-Lock and Face ID or Touch ID

Auto-lock and Face ID or Touch ID work together. When your phone locks due to auto-lock, you will need to use Face ID, Touch ID, or your passcode to unlock it again. The auto-lock timer does not affect how quickly Face ID or Touch ID responds — those features work when ready once the phone is locked.

If you have Face ID or Touch ID turned on, a shorter auto-lock time does not make unlocking your phone slower or more annoying, because you can unlock it with your face or fingerprint in one second. If you do not have biometric unlock set up, a shorter auto-lock time means you will need to type your passcode more often.

Troubleshooting Auto-Lock That Is Not Working

If your iPhone is not locking after the time you set, check whether you have Guided Access turned on. This accessibility feature can override auto-lock. Go to Settings > Accessibility > Guided Access and make sure the toggle is off.

Also check whether you are using an app that disables auto-lock, such as a video player or a reading app. Some apps are designed to keep the screen on while you are using them. Close the app and try auto-lock again on the home screen or in another app.

If auto-lock still is not working, restart your iPhone by pressing and holding the side button and either volume button, then sliding to power off. Wait 10 seconds, then press and hold the side button again until the Apple logo appears.

Auto-Lock and Battery Life

A shorter auto-lock time saves battery because your screen turns off sooner when you are not using your phone. The screen is the single biggest drain on iPhone battery, so locking it quickly makes a noticeable difference over the course of a day, especially if you set your phone down frequently without using it.

If you are trying to extend battery life, set auto-lock to 30 seconds or 1 minute. If you are in a situation where you need your phone to stay on — for example, following a recipe or a map — you can temporarily change auto-lock to 5 minutes or Never, then change it back when you are done.

Frequently Asked Questions

Can I set auto-lock to a time that is not on the list?

No. Your only options are 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, or Never. You cannot create a custom time like 45 seconds or 4 minutes. If none of these times fit your needs exactly, choose the closest one.

Does auto-lock work when I am using my iPhone?

No. Auto-lock only activates when your phone is inactive. As long as you are touching the screen or interacting with your phone, the timer does not count down. The moment you stop using it, the timer starts.

Will auto-lock lock my phone if I am in the middle of typing a message?

No. If you are actively using an app, your phone will not lock. However, if you start typing a message, then set your phone down without sending it, the auto-lock timer will start counting. If the timer runs out, your phone will lock and you will need to unlock it again to send the message.

What happens to my open apps when auto-lock locks my phone?

Your apps stay open in the background. When you unlock your phone, you will return to the app you were using. Auto-lock only locks the screen — it does not close apps or clear your data.

Is there a way to disable auto-lock for specific apps?

No. Auto-lock is a system-wide setting that applies to your entire phone. Some apps like video players or fitness apps may request permission to disable auto-lock while they are running, and you can allow or deny that request when the app asks. Otherwise, auto-lock works the same way across all apps.