Where to find the auto-lock setting on your iPhone

The setting that controls how long your iPhone screen stays on is called Auto-Lock, and it lives in Settings under Display & Brightness. Open Settings, tap Display & Brightness, then scroll down until you see Auto-Lock. The current time appears next to it — usually 30 seconds, 1 minute, 2 minutes, 5 minutes, or 10 minutes.

Tap Auto-Lock to see all available options. Your iPhone will show you a list: 30 Seconds, 1 Minute, 2 Minutes, 5 Minutes, 10 Minutes, and Never. Pick the time you want, and it takes effect when ready. There is no save button — just tap your choice and you are done.

Key Takeaways

  • Auto-Lock is in Settings > Display & Brightness, and you can set it to any duration from 30 seconds to Never.
  • Shorter times (30 seconds to 1 minute) lock your phone faster and use less battery, which matters if you leave your phone unattended often.
  • Longer times (5 to 10 minutes) keep your screen on while you are reading or using your phone hands-free, but drain the battery faster.
  • Setting Auto-Lock to Never means your screen stays on indefinitely until you manually lock it, which is useful only while charging and should not be your everyday setting.
  • If you use Face ID or Touch ID, a shorter Auto-Lock time adds a security layer because your phone locks and requires authentication sooner.

Why the time you choose matters for battery and security

The Auto-Lock time is a trade-off between convenience and two things you probably care about: how fast your battery drains and how quickly someone else could pick up your unlocked phone. A shorter time — 30 seconds or 1 minute — locks your phone sooner, which means the screen turns off faster and uses less power. It also means if you set your phone down and walk away, it locks within a minute, so a stranger or family member cannot scroll through your messages or photos.

A longer time — 5 or 10 minutes — keeps your screen on while you are reading an article, following a recipe, or watching a video without holding the phone. This is convenient, but the screen uses power the whole time it is on, and your phone stays unlocked longer if you step away. If you are at home with people you trust, this might not matter. If you are in a coffee shop or office, a shorter time is safer.

Most people find 2 minutes or 5 minutes is a reasonable middle ground: long enough to read something without the screen going dark, short enough that you are not draining the battery or leaving your phone unlocked for very long.

When to use Never, and why it is not a good everyday choice

Setting Auto-Lock to Never means your screen will stay on until you manually press the power button to lock it. This sounds convenient — your screen never goes dark while you are using your phone — but it has real downsides. The screen is the single biggest power drain on your iPhone, so leaving it on indefinitely will empty your battery in a few hours instead of a full day.

Never is useful only in specific situations: when your iPhone is plugged into power and sitting on a stand while you are cooking, or when it is mounted in your car and you are using it for navigation. Even then, many people use a different approach: they leave Auto-Lock at 5 minutes and just tap the screen to keep it awake if they need to. For everyday use, Never is a battery killer and a security risk, so avoid it as your default setting.

How Auto-Lock works with Face ID and Touch ID

When your iPhone locks, it requires Face ID or Touch ID to unlock it again — assuming you have set up one of those. A shorter Auto-Lock time means your phone locks more often, so you authenticate more often. This is actually a security feature: if someone picks up your phone, they have only a few seconds before it locks and requires your face or fingerprint.

If you set Auto-Lock to 10 minutes or Never, your phone stays unlocked longer, and someone could use it without your permission. This is why security-conscious people often use 1 or 2 minutes: it is fast enough to unlock with Face ID or Touch ID (which takes less than a second), but slow enough that you are not constantly re-authenticating while you are actively using the phone.

Changing Auto-Lock for specific situations

You cannot set different Auto-Lock times for different apps or locations — the setting applies to your whole phone. However, you can change it whenever you need to. If you are about to cook and want the screen to stay on, open Settings, go to Display & Brightness, tap Auto-Lock, and pick 10 Minutes. When you are done, go back and change it to your normal setting.

Some people keep their everyday Auto-Lock at 2 minutes, then change it to 10 minutes when they know they will be using their phone hands-free for a while. It takes 10 seconds to change, so there is no reason to leave it at Never permanently just to avoid changing it occasionally.

What happens if your screen goes dark while you are using your phone

If your Auto-Lock time is very short — 30 seconds — and you are reading something without touching the screen, it will go dark and lock. When this happens, just unlock it with Face ID or Touch ID, and you will be back where you were. Most apps remember where you were scrolling, so you will not lose your place.

If this happens frequently, your Auto-Lock time is probably too short for how you use your phone. Change it to 2 or 5 minutes instead. The goal is to find a time that locks your phone when you are not using it, but does not lock it while you are actively reading or watching something.

Frequently Asked Questions

Does a shorter Auto-Lock time really save battery?

Yes. The screen uses far more power than anything else on your iPhone. Every minute your screen is on costs battery. Setting Auto-Lock to 1 minute instead of 10 minutes can add several hours to your battery life over the course of a day, especially if you set your phone down frequently.

Can I set Auto-Lock differently for when my phone is plugged in?

No, Auto-Lock is the same whether your phone is charging or not. However, when your iPhone is plugged in, the battery is not draining, so you can safely use Never or a very long time without worrying about power. Just remember to change it back when you unplug.

What if I want my screen to stay on while I am using an app, but lock quickly when I am not?

Set Auto-Lock to 2 or 5 minutes. This is long enough that the screen will not go dark while you are actively using your phone, but short enough that it locks within a few minutes of you setting it down. If you need the screen to stay on longer for a specific task, change the setting temporarily.

Does Auto-Lock affect how often I have to use Face ID?

Yes. A shorter Auto-Lock time means your phone locks sooner, so you authenticate more often. If you find yourself unlocking your phone constantly, try increasing Auto-Lock to 5 minutes. If you are concerned about security, keep it at 1 or 2 minutes — Face ID is fast enough that it is not inconvenient.