Where to Find Screen Timeout Settings

Screen timeout on iPhone 13 is called Auto-Lock, and you change it in the Settings app under Display & Brightness. Open Settings, tap Display & Brightness, then scroll down to find Auto-Lock. The setting controls how long your screen stays on after you stop using your phone — from 30 seconds to 5 minutes, or Never if you want it to stay on indefinitely.

Auto-Lock is separate from your screen brightness and True Tone settings. It only affects how quickly the display turns off when you're not actively touching the phone. Once the screen locks, your phone still runs in the background — notifications come through, calls ring, and alarms go off as normal.

Key Takeaways

  • Auto-Lock is found in Settings > Display & Brightness, and you can set it to turn off after 30 seconds, 1 minute, 2 minutes, 3 minutes, 4 minutes, 5 minutes, or Never.
  • Shorter timeouts (30 seconds to 1 minute) save battery life but require you to unlock your phone more often when reading or looking at content.
  • Longer timeouts (3 to 5 minutes) keep your screen on longer but drain the battery faster, especially if you leave your phone unattended.
  • The Never setting keeps your screen on permanently until you manually lock it or press the power button, and it uses the most battery power.
  • You can also use Focus modes or scheduled downtime to automatically lock your phone at certain times without changing the main Auto-Lock setting.

Step-by-Step: Changing Auto-Lock

Start by opening the Settings app — the gray icon with gears on your home screen. Tap Settings, then scroll down and tap Display & Brightness. You'll see several options including Brightness, True Tone, and Night Shift. Keep scrolling down until you see Auto-Lock near the bottom of the screen.

Tap Auto-Lock to open the timeout options. You'll see a list: 30 Seconds, 1 Minute, 2 Minutes, 3 Minutes, 4 Minutes, 5 Minutes, and Never. Tap the option you want. A checkmark appears next to your choice, and the setting takes effect when ready. You can test it by putting your phone down — after the time you chose passes without any touch, the screen will go black.

Battery Life vs. Convenience: Which Timeout to Choose

Shorter timeouts drain less battery because your screen uses more power than almost any other part of your phone. If you set Auto-Lock to 30 seconds or 1 minute, your screen turns off quickly when you're not using it, which saves power over the course of a day. This is the best choice if you want maximum battery life and don't mind unlocking your phone frequently.

Longer timeouts (3 to 5 minutes) are better if you read articles, follow recipes, or look at maps for extended periods without touching the screen. Your phone won't lock while you're actively using it — it only locks after the timeout passes with no activity. The trade-off is that your battery drains faster, especially if you set your phone down while an app is open.

The Never setting keeps your screen on until you manually lock it. This uses the most battery and is rarely practical for daily use, but some people use it temporarily when they're near a charger or need their phone visible for an extended period.

What Happens When Your Screen Times Out

When the Auto-Lock timer runs out, your screen goes black and your phone locks. You'll need to use Face ID, Touch ID, or your passcode to unlock it again. The lock happens silently — no notification, no sound. Your phone continues to run in the background: alarms still go off, calls still ring, texts still arrive, and any apps you had open stay open in memory.

If you're in the middle of typing an email or editing a note when the screen locks, your work is usually saved as a draft. When you unlock the phone and open the app again, you'll see what you were working on. Some apps handle this differently, so if you're doing important work, it's worth saving manually before your screen times out.

When Auto-Lock Doesn't explore

Auto-Lock doesn't set up while you're actively using your phone — it only starts counting down after you stop touching the screen. If you're reading a long article or watching a video, the screen stays on as long as you keep interacting with it. The timer resets every time you touch the screen.

Some apps override Auto-Lock. If you're using a fitness app, a meditation app, or a video player, the screen may stay on even after your timeout period passes. This is intentional — these apps are designed to keep the screen on while you're using them. You can also manually lock your phone at any time by pressing the side button (power button) and swiping the lock slider, or by pressing the top and bottom buttons together on older models.

Using Focus Modes to Lock Your Phone Automatically

If you want different Auto-Lock times for different situations, you can use Focus modes. Go to Settings > Focus, then create or edit a Focus (like Work, Sleep, or Driving). Within each Focus, you can set a custom Auto-Lock time that applies only when that Focus is active. When you switch Focuses, the Auto-Lock time changes automatically.

This is useful if you want a short timeout during work hours to save battery, but a longer timeout in the evening when you're reading. You can also use Scheduled Downtime (Settings > Screen Time > Downtime) to automatically lock your phone at certain times, though this is more restrictive — it limits which apps you can use, not just when the screen locks.

Troubleshooting Auto-Lock Issues

If your screen isn't locking after the timeout you set, check whether an app is overriding Auto-Lock. Video players, fitness apps, and some navigation apps intentionally keep the screen on. Close the app and try again. If the screen still won't lock, restart your iPhone by pressing the side button and volume up button together, then sliding the power-off slider.

If Auto-Lock is set to Never and you want to change it back, go to Settings > Display & Brightness > Auto-Lock and select a different timeout. If you can't find the Auto-Lock setting, make sure you're in Display & Brightness and not a different menu — it's straightforward to confuse with Brightness settings or accessibility options.

Frequently Asked Questions

Does Auto-Lock affect my alarms or notifications?

No. Your alarms, timers, calls, and notifications work normally even when your screen is locked. Auto-Lock only controls when the display turns off — it doesn't stop your phone from running in the background or receiving alerts.

Will a shorter Auto-Lock time really save battery?

Yes, noticeably. The display is one of the biggest battery drains on your iPhone. Setting Auto-Lock to 30 seconds instead of 5 minutes can add several hours to your battery life over the course of a day, especially if you check your phone frequently and set it down between uses.

Can I set different Auto-Lock times for different apps?

Not directly through Auto-Lock itself, but you can use Focus modes to change Auto-Lock based on what you're doing. Create a Focus for reading or work, set a longer Auto-Lock time for that Focus, and set up it when you need the screen to stay on longer.

What's the difference between Auto-Lock and manually locking my phone?

Auto-Lock locks your phone automatically after a period of inactivity. Manually locking means you press the side button and swipe to lock it yourself. Both result in a locked screen that requires Face ID, Touch ID, or a passcode to unlock.

If I set Auto-Lock to Never, can I still lock my phone manually?

Yes. Even with Auto-Lock set to Never, you can lock your phone at any time by pressing the side button and swiping the lock slider, or by pressing the top and bottom buttons together. The Never setting just means the phone won't lock automatically.