Where to find the auto-lock setting on your iPhone

Your iPhone's screen lock time—officially called Auto-Lock—is controlled in the Settings app under Display & Brightness. Open Settings, tap Display & Brightness, then scroll down and tap Auto-Lock. You'll see a list of time intervals: 30 seconds, 1 minute, 2 minutes, 3 minutes, 4 minutes, and 5 minutes. Select whichever interval you want, and the change takes effect when ready.

The default setting on most iPhones is 2 minutes, which means your screen will go dark and lock itself 2 minutes after you stop using it. If you've never changed this setting, that's what's currently active on your phone.

Key Takeaways

  • Auto-Lock is found in Settings > Display & Brightness > Auto-Lock, and you can set it anywhere from 30 seconds to 5 minutes.
  • Shorter lock times (30 seconds to 1 minute) protect your battery and security but require you to unlock more often.
  • Longer lock times (4 to 5 minutes) let you use your phone longer without unlocking, but drain battery faster and leave your phone unlocked longer if you set it down.
  • If you never want your screen to lock automatically, you can disable Auto-Lock entirely, though this is not recommended for security reasons.
  • The Auto-Lock setting only applies when your phone is not plugged in; when charging, you can set a separate lock time in Settings > Face ID & Passcode.

Why you might want to change your lock time

The reason to change Auto-Lock depends on how you use your phone. If you're reading long articles, following recipes, or watching videos, a 2-minute lock time means you'll have to unlock your phone frequently. Moving it to 4 or 5 minutes gives you more uninterrupted time without the screen going dark.

On the other hand, shorter lock times protect your battery and your privacy. If you set your phone down in a public place, a 30-second or 1-minute lock time means someone can't pick it up and use it for long. Shorter times also use less battery because your screen isn't staying on as long.

What happens if you turn off Auto-Lock completely

At the bottom of the Auto-Lock menu, you'll see an option called "Never." If you tap it, your screen will never lock automatically—it will only lock when you press the side button or when Face ID detects the phone is no longer in use. This is convenient if you use your phone hands-free, but it's a security risk because anyone who picks up your phone can access everything on it.

If you do choose Never, your battery will also drain faster because the screen stays on longer. Most people find a middle ground—3 to 5 minutes—works best for daily use.

Auto-Lock behavior when your phone is charging

When your iPhone is plugged in and charging, the Auto-Lock setting still applies, but you can override it separately. Go to Settings > Face ID & Passcode (or Touch ID & Passcode on older models), enter your passcode, and scroll down to find "Lock on Home Button" or similar options. Some users prefer to set a longer lock time while charging since the phone is stationary and less likely to be grabbed.

If you're using your phone on a stand while cooking or working, you might want Auto-Lock set to Never while charging, then switch it back to a shorter time when unplugged. You'll have to change the setting manually each time, though—there's no automatic switching based on power state.

How to check your current Auto-Lock setting

If you're not sure what your Auto-Lock is set to, open Settings, tap Display & Brightness, and scroll to Auto-Lock. Whichever option has a checkmark next to it is your current setting. If you see "Never" checked, your screen will not lock automatically.

You can also test it: set a timer for your current Auto-Lock time, set your phone down without touching it, and watch when the screen goes dark. This confirms the setting is working as you expect.

Troubleshooting if Auto-Lock isn't working

If you've set Auto-Lock but your screen isn't locking after the time you chose, a few things could be happening. First, check that you actually tapped the time interval and saw it get a checkmark—sometimes the tap doesn't register. Go back to Settings > Display & Brightness > Auto-Lock and confirm your choice is still selected.

Second, some apps override Auto-Lock. If you're in the Camera app, Maps, or a video player, the screen may stay on longer to prevent interruption. This is intentional—Apple designed it so you don't have to keep unlocking while using these apps. Once you switch to another app or the home screen, normal Auto-Lock resumes.

Third, if you have an accessibility feature called "Guided Access" turned on, it can prevent Auto-Lock from working. Go to Settings > Accessibility > Guided Access and make sure it's toggled off.

Frequently Asked Questions

Can I set Auto-Lock to longer than 5 minutes?

No. The longest built-in option is 5 minutes. If you need your screen to stay on longer, your only choice is to set it to Never, though this is not recommended for security. Some apps like Maps or video players will keep the screen on longer by design, even if Auto-Lock is set to a shorter time.

Does changing Auto-Lock affect Face ID or Touch ID?

No. Auto-Lock only controls when the screen goes dark. Your Face ID or Touch ID settings remain separate. Your phone will still require Face ID or your passcode to unlock, regardless of how quickly the screen locks.

Will a shorter Auto-Lock time really save battery?

Yes, but the difference is usually small—maybe 5 to 10 percent over a full day, depending on how much you use your phone. The screen is one of the biggest battery drains, so keeping it off longer does help. If battery life is a concern, lowering Auto-Lock to 1 or 2 minutes is worth trying.

What's the difference between Auto-Lock and the lock screen timeout?

Auto-Lock is the only lock screen timeout setting on iPhone. Once the time you set passes, the screen locks. There's no separate "timeout" setting like on some Android phones. The Auto-Lock time is the only control you have over how long the screen stays on before locking.