Where to Find Screen Timeout on Your iPhone

Screen timeout on iPhone is called Auto-Lock, and you change it in Settings under Display & Brightness. Open Settings, tap Display & Brightness, then scroll down to find Auto-Lock. The setting controls how many seconds or minutes pass before your screen goes dark when you are not using the phone.

The options range from 30 seconds to 5 minutes, plus a Never option that keeps the screen on indefinitely. Never is useful only when your phone is plugged in — if you choose it while unplugged, your battery will drain quickly.

Key Takeaways

  • Auto-Lock is found in Settings > Display & Brightness, and it controls when your screen turns off during inactivity.
  • You can set Auto-Lock to 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, or Never.
  • Shorter timeouts save battery life but require you to unlock your phone more often; longer timeouts drain the battery faster.
  • The Never setting only works while your phone is charging — unplugged, it will still lock after 15 minutes for security reasons.

Step-by-Step: Changing Auto-Lock

Start by opening the Settings app on your home screen. Tap the gear icon, then look for Display & Brightness in the menu — it is usually near the top.

Once you are in Display & Brightness, scroll down past Brightness and True Tone until you see Auto-Lock. Tap it, and a list of time options will appear. Select the timeout length you want. The change takes effect when ready; you do not need to restart your phone or confirm the choice.

What Each Timeout Length Means for Battery and Convenience

Shorter timeouts — 30 seconds or 1 minute — lock your screen quickly, which saves battery and protects your privacy if someone picks up your phone. The trade-off is that you unlock your phone more often during normal use, which can feel annoying if you are reading or browsing for extended periods.

Longer timeouts — 3 or 5 minutes — let you use your phone without unlocking it again, but they drain the battery faster because the screen stays lit longer. If you spend a lot of time reading articles or watching videos, a longer timeout is more practical. If you move between tasks quickly or carry your phone in a pocket, a shorter timeout works better.

The Never option keeps the screen on as long as you are looking at it, but only while the phone is plugged into power. If you unplug it, iOS automatically reverts to a 15-minute lock for security, even if you selected Never.

Why Your Screen Timeout Might Not Be Working

If your screen is locking faster than your Auto-Lock setting says it should, check whether you have enabled Guided Access or a similar accessibility feature. These can override Auto-Lock and lock the screen on their own schedule.

Also check whether your phone is in Low Power Mode. Low Power Mode does not change Auto-Lock directly, but it may make your screen appear to dim or lock sooner because it reduces screen brightness automatically. You can turn off Low Power Mode in Settings > Battery, or by swiping down from the top right and tapping the battery icon.

Auto-Lock vs. Screen Brightness: What Is the Difference

Auto-Lock and screen brightness are separate settings. Brightness controls how bright your display is right now. Auto-Lock controls when the display turns off after you stop using the phone. You can have a bright screen with a short Auto-Lock, or a dim screen with a long Auto-Lock — they do not depend on each other.

If you want your screen to stay on longer but use less battery, lower the brightness instead of raising the Auto-Lock timeout. A dimmer screen uses less power than a bright one, even if it stays on for the same amount of time.

When to Use Never and When Not To

The Never setting is useful only in specific situations: when your phone is on a stand and plugged in, such as during a video call, a recipe lookup while cooking, or a presentation. In these cases, you do not want the screen to lock while you are actively looking at it.

Do not use Never as your everyday setting. It will drain your battery in a few hours if you forget to plug in the phone, and it leaves your device unlocked if someone else picks it up. If you find yourself wishing the screen would stay on longer, try 3 or 5 minutes first, then move to Never only if that is not enough.

Frequently Asked Questions

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

No. Auto-Lock only controls when the screen turns off. When you wake the phone again, Face ID or Touch ID works the same way regardless of your Auto-Lock setting. A shorter Auto-Lock just means you unlock the phone more often.

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

No. Auto-Lock is a system-wide setting that applies to all apps and situations. You cannot set a longer timeout for reading apps and a shorter one for email. The only exception is Guided Access, an accessibility feature that lets you lock the phone to a single app, but that is a different tool.

Why does my screen lock even though I am using my phone?

If your screen locks while you are actively using it, check whether you have enabled Raise to Wake or Attention Aware Features in Display & Brightness. These features can cause the screen to lock if the phone thinks you are not looking at it. You can turn them off if they are causing problems.

Will a longer Auto-Lock drain my battery much faster?

Yes, noticeably. The screen is one of the biggest battery drains on an iPhone. Every extra minute the screen stays on uses more power. If battery life is a concern, keep Auto-Lock at 1 or 2 minutes instead of 5 minutes.