To change when your iPhone screen locks, go to Settings > Display & Brightness > Auto-Lock and choose a duration. To set or change the device passcode, open Settings > Face ID & Passcode on a Face ID model, or Settings > Touch ID & Passcode on an iPhone with a Home button. These are separate controls: Auto-Lock sets the screen’s idle interval; the passcode protects access to the device.
Change the Auto-Lock interval
- Open Settings.
- Tap Display & Brightness, then Auto-Lock.
- Choose one of the durations shown on your iPhone.
A shorter interval means the screen locks sooner after inactivity, which can reduce the time an unattended phone remains accessible. Choose a setting that fits how you use the phone; the available durations can vary, so use the options displayed on your device rather than relying on a universal list. Apple also notes that when an iPhone remains on the Home Screen without activity, its Auto-Lock time is reduced by half. See Apple’s iPhone display and Auto-Lock guidance.
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Set or change your iPhone passcode
- Open Settings.
- Tap Face ID & Passcode on a Face ID iPhone, or Touch ID & Passcode on an iPhone with a Home button.
- To create a passcode, tap Turn Passcode On. To replace an existing one, tap Change Passcode.
- Follow the on-screen prompts. To select a different format, tap Passcode Options when prompted.
Your device passcode is different from your Apple Account password. A passcode is more than a screen-unlock convenience: Apple’s Set a passcode on iPhone guide says, “Setting a passcode also turns on data protection, which encrypts your iPhone data with 256-bit AES encryption.” Apple qualifies that some apps may opt out of data protection.
Choose a passcode format you can protect
Apple identifies Custom Alphanumeric Code and Custom Numeric Code as the most secure passcode options available. Its personal safety guidance describes formats ranging from four-digit numeric to custom alphanumeric, with six digits as the default. Apple does not quantify the resistance of each code or of a particular user-chosen passcode; a custom format is not a guarantee that a code cannot be guessed.
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- [2 Pack] This product includes 2 pack privacy screen protectors.WORKS FOR iPhone 17e/16e/14/iPhone 13/13 Pro 6.1 Inch tempered glass screen protector.Featuring maximum protection from scratches, scrapes, and bumps.[Not for iPhone 16 6.1 inch, iPhone 13 mini 5.4 inch, iPhone 13 Pro Max/iPhone 14 Pro Max/iPhone 14 Plus 6.7 inch, iPhone 14 Pro 6.1 inch]
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| Format | Practical consideration |
|---|---|
| Custom Alphanumeric Code | Allows letters and numbers. Apple lists this among the most secure available formats; choose something you can remember without making it easy for another person to guess. |
| Custom Numeric Code | Uses a numeric code of your choosing. Apple lists this among the most secure available formats; a longer or less predictable code may be harder to memorize. |
| Six-Digit Numeric Code | Apple describes this as the default format. It may be easier to enter, but avoid predictable sequences or information others can readily associate with you. |
| Four-Digit Numeric Code | Shorter and simple to enter, but offers fewer possible combinations than a longer code. |
Apple’s format options and guidance are described in its Personal Safety guide. Do not use a passcode that you reuse as a password elsewhere.
What if someone knows your passcode?
Changing the device passcode is a useful first step if you think someone else knows it. For added protection against certain sensitive changes, consider Stolen Device Protection. Apple says it is available with iOS 17.3 or later and should be enabled before an iPhone is lost or stolen. It requires a device passcode, Face ID or Touch ID, Apple Account two-factor authentication, Find My, and Location Services.
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- [3 Pack] This product includes 3 pack privacy screen protectors.WORKS FOR iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch tempered glass screen protector. Due to the rounded edge design of the iPhone 16/iPhone 15/iPhone 15 Pro and to enhance compatibility with most cases,the tempered glass screen protectors will be slightly smaller than the phone screen.[Not for iPhone 16e 6.1 inch, iPhone 15 Plus/iPhone 15 Pro Max/iPhone 16 Plus 6.7 inch,iPhone 16 Pro 6.3 inch,iPhone 16 Pro Max 6.9 inch]
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- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
Turn on Stolen Device Protection
Open Settings > Face ID & Passcode or Settings > Touch ID & Passcode, authenticate, then tap Stolen Device Protection and turn it on. Follow any prompts shown on your iPhone. The exact labels may change with iOS updates.
Choose where the extra protection applies
By default, added protections apply when the iPhone is away from familiar locations. Depending on the setting and action, some sensitive changes require Face ID or Touch ID with no passcode fallback; others can trigger a one-hour security delay followed by another biometric check. Changing the device passcode is among the actions that can involve a delay.
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- Perfect Fit for iPhone 17 Pro Max：Engineered exclusively for iPhone 17 Pro Max with seamless edge-to-edge coverage, ensuring precise alignment and reliable full-screen protection.
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The Always option extends these extra measures to familiar locations, including home and work. That can offer broader protection, but also means added biometric checks or delays may apply there. Apple explains the feature and its requirements in its Stolen Device Protection guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Know the passcode recovery window and erase setting
On iOS 17 or later, after changing a passcode, the previous passcode can be used once within 72 hours to reset the new one. Apple says you can expire the previous passcode immediately in settings. Treat this as a limited recovery option, not a substitute for remembering the new code; it also means the old code may remain useful during that window unless you expire it. See Apple’s passcode safety guidance.
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- 【Industry-Leading 100% Anti-Spy Privacy Protection】Designed for iPhone 17 Pro. Larger iPhone screens are easier for others to glance at, so UltraGlass uses patented, SEGI-certified 25° Blackout-3 optical technology to help block side views and keep emails, banking apps, and private content visible only to you—while keeping the front view HD-clear and comfortable through hours of scrolling and streaming.
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Apple also provides an optional setting to erase all information, media, and personal settings after 10 consecutive failed passcode attempts. Because enabling it can result in data loss, consider your backup and recovery situation before turning it on. Apple documents the setting in its passcode guide.
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- 【Innovative 1-Step Installation! 】Simplify the application process! Featuring automatic alignment functionality, enjoy a quick and easy installation,swiftly eliminate air bubbles, providing you a hassle-free installation experience for the iPhone 16 Pro Max privacy screen protector.Friendly Reminder: Please watch the installation video before you begin.
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