Where to find the auto-lock setting on your iPhone

The auto-lock feature on your iPhone automatically locks the screen after a set period of inactivity. You control this timing through the Display & Brightness settings, not through a separate security menu. The setting applies to all users on the device.

Open Settings, then tap Display & Brightness. Scroll down to find Auto-Lock. The current time interval appears next to it — typically 30 seconds, 1 minute, 2 minutes, 5 minutes, or 10 minutes by default. Tap Auto-Lock to see all available options and select a new one.

Key Takeaways

  • Auto-Lock is found in Settings > Display & Brightness, not in Security or Face ID settings.
  • Your choices are 30 seconds, 1 minute, 2 minutes, 5 minutes, 10 minutes, or Never — selecting Never means your screen stays on indefinitely until you manually lock it.
  • Shorter lock times (30 seconds to 1 minute) protect your phone if you set it down in public, but require more frequent unlocking.
  • Longer times (5 to 10 minutes) reduce unlock friction but leave your phone vulnerable if unattended.
  • The setting takes effect when ready after you select it — no restart or confirmation required.

What each auto-lock option means for your daily use

30 seconds locks your phone very quickly, useful if you work in an environment where you set your device down frequently or share space with others. You will unlock it many times per day, but the trade-off is strong protection against accidental pocket unlocks or someone picking up your phone during a brief absence.

1 to 2 minutes balances security and convenience for most people. Your phone locks fast enough to prevent casual access if you step away, but not so fast that you unlock it constantly while reading, browsing, or watching video.

5 to 10 minutes suits people who work at a desk, use their phone for extended reading, or rarely leave it unattended. The longer window means fewer interruptions, but your phone remains unlocked longer if you forget it or set it down in a public space.

Never disables auto-lock entirely. Your screen stays on until you manually press the side button and swipe to lock, or until the battery drains. This is rarely practical for daily use because it drains battery faster and leaves your phone exposed, but some people use it temporarily while docked or charging at home.

How auto-lock interacts with Face ID and Touch ID

Auto-lock and biometric unlock are separate systems. When your screen locks due to auto-lock timeout, Face ID or Touch ID will unlock it again — you do not have to enter your passcode. The auto-lock timer only controls when the screen goes dark; it does not change how you unlock the phone afterward.

If you have Face ID enabled, a shorter auto-lock time does not make unlocking slower or more annoying, because your face or fingerprint unlocks it when ready. If you use only a passcode, a very short auto-lock time (30 seconds) means typing your code frequently, which may feel burdensome.

Why your auto-lock setting might not be working

If your phone is not locking after the time you set, check whether you have an app running that overrides auto-lock. Some apps — particularly video players, fitness apps, or navigation tools — request permission to keep the screen on during use. When active, these apps prevent auto-lock from triggering.

Close the app or disable its screen-on permission in Settings > [App Name] > Display & Brightness. Also confirm that you set the auto-lock time to something other than Never. If you selected Never and forgot, your screen will never lock automatically no matter how long you leave the phone idle.

Restart your iPhone if the setting still does not work as expected. Power off completely, wait 10 seconds, then power back on. This clears temporary glitches that sometimes prevent settings from taking effect.

Auto-lock and battery drain

Shorter auto-lock times save battery because your screen turns off sooner during idle periods. The display is one of the largest power consumers on your iPhone. If you notice your battery draining faster than usual, lowering your auto-lock time from 10 minutes to 2 minutes can extend your daily usage by an hour or more, depending on how often you use the phone.

Conversely, setting auto-lock to Never or a very long time (10 minutes) will noticeably reduce battery life if you frequently set your phone down without manually locking it. If battery is a concern, aim for 2 to 5 minutes as a practical middle ground.

Adjusting auto-lock for different situations

You cannot create different auto-lock schedules for different times of day or locations — the setting is global and always the same. However, you can change it quickly whenever your needs shift. If you are about to watch a video, tap Settings > Display & Brightness > Auto-Lock and select 10 minutes or Never temporarily. When you are done, change it back to your usual setting.

Some people keep their phone at 2 minutes for everyday use, then switch to 10 minutes when they know they will be reading or watching for an extended period. This takes 10 seconds and requires no special tools or permissions.

Frequently Asked Questions

Does auto-lock lock my apps or just the screen?

Auto-lock only locks the screen. Your apps remain open in the background. When you unlock your phone, you return to the app you were using. If you want to lock specific apps — like banking or email — use App Lock in Settings > Face ID & Passcode, which is a separate feature from auto-lock.

Can I set auto-lock to a time that is not listed?

No. Your only choices are 30 seconds, 1 minute, 2 minutes, 5 minutes, 10 minutes, or Never. You cannot create a custom interval like 3 minutes or 7 minutes through the standard settings.

What happens if I set auto-lock to Never?

Your screen will stay on indefinitely until you manually lock it by pressing the side button and swiping, or until the battery dies. This drains your battery much faster and leaves your phone unlocked if you forget it, so it is not recommended for regular use.

Does auto-lock work when my iPhone is in sleep mode?

Your iPhone does not have a separate sleep mode. When the screen locks due to auto-lock, the phone enters a low-power state but remains ready to receive calls, messages, and notifications. This is the normal locked state.

Will changing auto-lock affect my iPad or Mac?

No. Auto-lock is a per-device setting. Changing it on your iPhone does not affect your iPad, Mac, or any other Apple device. Each device has its own auto-lock or screen timeout setting that you adjust separately.