iPhone (iOS) · Display & Sound
Set How Quickly the Screen Locks
Auto-Lock determines how long iPhone waits without any touch input before dimming and locking the screen, balancing convenience against battery life and security.
How to open Auto-Lock
- Open Settings → Display & Brightness → Auto-Lock
- Choose a duration from the list, or Never
- Enable Attention Aware Features under Face ID & Passcode if desired
- Test by leaving the screen idle to confirm the timing feels right
What you should know
- Options typically range from 30 seconds to 5 minutes, plus Never
- Interacts with Attention Aware Features, which can keep the screen on longer while you're looking at it
- Locking triggers Face ID/Touch ID or passcode requirement for the next unlock, per Sign-In settings
- Low Power Mode can influence default screen timeout behavior
Why it matters
Auto-Lock is a quiet but constant tradeoff between security, battery life, and convenience—too short and the screen locks mid-task annoyingly, too long and the device stays unlocked and visible longer than necessary, both draining battery and creating a privacy exposure window if left unattended. In shared or public spaces, a short Auto-Lock time reduces the chance of someone else viewing notifications or content on an unattended device. It's one of the simplest settings with an outsized effect on daily battery performance.
Best practices
- Choose a shorter Auto-Lock time (30 seconds–1 minute) in public or shared environments for better privacy
- Use Never only when the device is stationary and charging, such as during a presentation or as a kiosk
- Combine with Attention Aware Features so the screen doesn't dim while actively reading
- Reconsider a longer timeout if you find yourself frequently unlocking mid-task
Common problems and fixes
- Screen locks too quickly while reading
- Increase the Auto-Lock duration under Settings > Display & Brightness > Auto-Lock, or enable Attention Aware Features
- Auto-Lock option is grayed out
- Check whether Low Power Mode or a Screen Time restriction is overriding the setting
- Battery drains faster after changing Auto-Lock
- A longer timeout keeps the display on more, increasing power use; shorten it if battery life matters more
Tips and tricks
- Use a shorter Auto-Lock time paired with Face ID for a good balance of security and quick access
- Check Screen Time > Always Allowed if Auto-Lock behaves unexpectedly during restricted hours
Frequently asked questions
Does Auto-Lock affect Face ID timing?
No, Face ID recognition speed is separate; Auto-Lock only controls when the screen dims and locks from inactivity.
Can Auto-Lock be set to Never?
Yes, though it's generally discouraged for battery and security reasons except in specific stationary use cases.
Does Attention Aware Features override Auto-Lock?
It can delay dimming while it detects you're looking at the screen, on supported Face ID models.
Related settings
- Display & BrightnessDisplay & Brightness settings control screen brightness, True Tone, Dark Mode, text size, and Night Shift for warmer colors in the evening.
- Sign-In & SecuritySign-In & Security is where you change your Apple ID password, view your two-factor authentication trusted phone numbers, and manage which devices are trusted to approve sign-ins.
More Display & Sound guides for iPhone (iOS)
- NotificationsNotification settings let you control exactly how each app alerts you — as a banner, a sound, a badge, or grouped into a scheduled summary — so your Lock Screen and Notification Center reflect what actually deserves your attention.
- Sounds & HapticsSounds & Haptics controls ringtone and alert tones, ringer and alert volume, and the tactile vibration feedback (haptics) your iPhone provides for calls, texts, and everyday interactions like typing.
- FocusFocus lets you silence distracting notifications based on what you're doing — like Work, Sleep, or Personal time — while still allowing calls and alerts from specific people or apps you choose to come through.
- True ToneTrue Tone uses ambient light sensors to automatically adjust the display's white balance and intensity to match surrounding lighting conditions, keeping colors looking natural under different light sources.
- Night ShiftNight Shift automatically shifts the iPhone display to warmer colors on a schedule or from sunset to sunrise, reducing blue light exposure that can interfere with sleep when using the device at night.
- Dark ModeDark Mode changes the system interface and supported apps to a dark color scheme, and can be set to switch automatically at sunset and sunrise or on a custom schedule.