Before an iPhone goes missing, use a strong passcode, enable Stolen Device Protection, and lock apps that expose sensitive information. These steps make a stolen phone harder to exploit—even if someone knows its passcode—but no setting guarantees that a device cannot be accessed. Lockdown Mode is a separate, more restrictive option for people facing a credible risk of highly sophisticated cyberattacks.
What should I do before my iPhone is stolen?
Set up protections while you still have the phone. The most useful routine measures are a strong passcode, Stolen Device Protection, locks on sensitive apps, and restrictive wired-accessory settings. Menu wording and availability can vary by iOS version and connector.
- Choose a strong passcode. Use a code that is difficult to guess and not reused elsewhere. Apple identifies Custom Alphanumeric Code and Custom Numeric Code as its most secure passcode options. Apple says setting a passcode enables data protection, which encrypts iPhone data with 256-bit AES encryption; some apps may opt out of data protection. Apple does not establish a passcode length that guarantees resistance to guessing. Apple’s passcode guidance
- Turn on Stolen Device Protection. It requires iOS 17.3 or later and must be enabled before the phone is lost or stolen. Go to Settings > Face ID & Passcode or Settings > Touch ID & Passcode, then tap Stolen Device Protection. If the option does not appear, Apple says you may need to set up Face ID or Touch ID first. Apple’s Stolen Device Protection guide
- Set its location behavior. By default, the extra protections apply away from familiar locations. To require them everywhere, set Stolen Device Protection to Always. That is more protective if someone might take the phone from a place iOS treats as familiar, but it also means the extra authentication applies there. Apple’s setup details
- Lock sensitive apps. On the Home Screen, touch and hold an eligible app and choose Require Face ID or Require Touch ID. Mail is worth considering because it can contain account-reset links or verification codes. This is a risk to assess for your accounts, not a claim that every email account or code is exposed. Apple’s app-locking instructions
- Review wired-accessory access. Apple says an iPhone generally must first be unlocked before it communicates with a wired accessory or computer. Once an accessory is approved while the phone is unlocked, it can remain connected after the phone is locked again. Options depend on the connector; check Settings > Privacy & Security > Wired Accessories where available. This setting does not protect the phone from someone who can unlock it. Apple’s wired-accessory guidance
Can someone get into my iPhone if they know my passcode?
Knowing the passcode can make a phone more vulnerable, so do not treat the lock screen alone as sufficient protection. Stolen Device Protection adds friction to selected sensitive actions when the phone is away from familiar locations: those actions require Face ID or Touch ID, with no passcode fallback. For selected high-impact security changes, it requires biometric authentication, a one-hour security delay, and a second biometric authentication.
Apple’s examples of changes subject to the delay include changing the Apple Account password, signing out of the Apple Account, changing the device passcode, and adding or removing Face ID or Touch ID. The delay does not apply to every action, and the feature should not be read as a guarantee that all data or all account activity is protected in the same way. Apple says the delay is designed to give you time to mark the device as lost and secure the Apple Account. Apple’s explanation of the security delay
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Choose the location setting that fits your risk
| Stolen Device Protection choice | Coverage | Convenience trade-off |
|---|---|---|
| Away from Familiar Locations | Extra requirements apply when the iPhone is away from familiar locations. | At familiar places, the normal passcode experience remains available. |
| Always | Extra requirements apply regardless of location. | Biometric checks and other protections apply even at familiar places. |
Stolen Device Protection requires two-factor authentication for the Apple Account, a device passcode, Face ID or Touch ID, Find My, and Location Services. Apple’s prerequisites and setup guidance
How do I protect my iPhone if it’s seized?
First distinguish an ordinary theft or loss from a credible threat of a highly sophisticated targeted cyberattack. For the ordinary case, the passcode, Stolen Device Protection, app locks, and accessory settings above are the practical preventive measures. If you believe you may be specifically targeted, Apple’s Lockdown Mode is designed for that narrower threat model.
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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.)
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Lockdown Mode is for exceptional threat concerns
Apple says: “Most people are never targeted by attacks of this nature.” Apple Support’s Lockdown Mode guidance describes it as optional extreme protection that limits apps, websites, and features, and blocks tethered connections while the device is locked. These limits can affect normal use, so Lockdown Mode is not a routine theft setting or a substitute for the ordinary checklist. For a sustained targeted threat, Apple says all of a person’s devices should have Lockdown Mode turned on for complete protection. Apple’s overview of Lockdown Mode
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to do once the iPhone is missing
Use Find My or iCloud.com to mark the iPhone as lost as soon as possible. Do not assume it will always be locatable or reachable; that depends on circumstances beyond the settings described here. The Security Delay in Stolen Device Protection is intended to provide time to mark the device as lost and secure the Apple Account. Apple’s guidance on Stolen Device Protection and the delay
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