You can make a lost iPhone much harder to exploit by choosing a strong passcode, turning on Stolen Device Protection, and locking sensitive apps. These steps are especially important if someone might know your passcode. They reduce risk, but no setting guarantees that a device can never be accessed. For a credible risk of highly sophisticated cyberattacks, Apple’s Lockdown Mode is a separate, more restrictive option.
What should I do before my iPhone is stolen?
Start with protections that still matter if someone learns your passcode. A strong passcode helps protect the device’s data; Stolen Device Protection adds biometric checks and delays for selected actions; and app locks add another barrier around sensitive information.
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- Choose a strong, non-obvious passcode that you do not reuse elsewhere.
- Turn on Stolen Device Protection and decide whether to require its protections everywhere.
- Lock sensitive apps, especially those that contain private messages, account-reset links, or verification codes.
- Review wired-accessory settings for your iPhone’s connector.
Can someone get into my iPhone if they know my passcode?
Knowing the passcode can make a stolen phone more valuable to an attacker, so do not treat a passcode as the only safeguard. Stolen Device Protection and app locks can require Face ID or Touch ID for selected actions without offering the passcode as a fallback. Their precise behavior depends on the action and, by default, whether the phone is away from familiar locations.
Use a strong passcode
Apple says setting a passcode enables data protection, which encrypts iPhone data with 256-bit AES encryption. Apple identifies Custom Alphanumeric Code and Custom Numeric Code as the most secure passcode options. Choose something that is not easy to guess and is not used for another account. Apple notes that some apps may opt out of data protection, so encryption should not be read as a guarantee that every app’s data is protected in the same way. Apple’s passcode guidance explains the available options.
#1 Best Overall
- [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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Turn on Stolen Device Protection
Stolen Device Protection is available on iOS 17.3 or later and must be enabled before the iPhone is lost or stolen. To set it up, open Settings > Face ID & Passcode (or Touch ID & Passcode), enter the device 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.
For selected sensitive actions, the feature requires Face ID or Touch ID and does not allow passcode fallback. Certain high-impact security changes require a biometric authentication, a one-hour Security Delay, and a second biometric authentication after the wait. Apple’s examples 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 protected by the feature. See Apple’s Stolen Device Protection guidance for its full description.
Rank #2
- [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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Choose where the extra protections apply
By default, Stolen Device Protection applies its additional requirements when the iPhone is away from familiar locations. You can instead choose Always so the protections apply regardless of location. The trade-off is convenience: the default preserves the usual passcode experience at familiar places, while Always applies the added checks everywhere.
Stolen Device Protection requires two-factor authentication for your Apple Account, a device passcode, Face ID or Touch ID, Find My, and Location Services. Apple gives the setup details here.
Rank #3
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Lock the apps with the most sensitive information
On the Home Screen, touch and hold an eligible app, then choose Require Face ID or Require Touch ID. With Stolen Device Protection enabled, a locked app requires biometric authentication without passcode fallback when the iPhone is away from familiar locations. Apple specifically notes that Mail can contain personal information, including two-factor authentication codes. Email may also contain account-reset links, but what an attacker could access depends on the accounts and messages involved. Apple explains the feature at Lock or hide an app on iPhone.
Review wired-accessory settings
Apple says an iPhone generally must be unlocked before it can communicate with a wired accessory or computer. An accessory approved while the iPhone is unlocked may remain connected after the phone is locked again. The available Wired Accessories choices vary by connector. On USB-C models, Apple lists Always Ask and Ask for New Accessories; Automatically Allow When Unlocked is the default, and Always Allow is the least restrictive option. Check Apple’s accessory connection guidance for details that apply to your model. These settings do not protect the phone from someone who can unlock it.
Rank #4
- 【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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Which Stolen Device Protection setting should I choose?
| Setting | Coverage | Convenience |
|---|---|---|
| Away from Familiar Locations | Additional requirements apply when the iPhone is away from familiar locations. | Preserves the normal passcode experience at familiar places. |
| Always | Additional requirements apply regardless of location. | Requires the added protections everywhere. |
Choose based on how much you value frictionless use at familiar places versus the added coverage of biometric checks everywhere. Either choice is more useful for routine theft prevention than relying on an app lock alone.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesHow do I protect my iPhone if it’s seized?
The right measures depend on what “seized” means in your situation. For ordinary loss or theft, the passcode, Stolen Device Protection, and sensitive-app locks are practical preventive steps. If you mean a credible risk of a highly sophisticated cyberattack, Apple positions Lockdown Mode for that narrower threat model—not as a routine setting for every theft concern.
Best Value
- 【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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- 【Ultra-Clear and Ultra-Sensitive】This protective film covers the iPhone 16 Pro Max 6.9-inch, ensuring you feel as if there's nothing on your iPhone screen.The high-quality anti-fingerprint surface keeps your screen clean, bubble-free, delivering the most natural viewing and sensitive touch for videos and gaming.
- 【26° Anti-Spy Privacy Protection】Featuring upgraded micro-louver optical technology, this iPhone 16 Pro Max privacy screen protector delivers a precise 26° privacy viewing angle. It maintains ultra HD clarity from the front view, while instantly darkening the screen for anyone viewing from the sides or behind.
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When Lockdown Mode may make sense
Apple says Lockdown Mode is an optional, extreme protection for people who believe they may be targeted by highly sophisticated cyberattacks. It limits apps, websites, and features; some functionality will not work normally. It also blocks tethered connections while the iPhone is locked. Apple cautions: “Most people are never targeted by attacks of this nature.” Read Apple’s Lockdown Mode guidance before enabling it so you understand the restrictions. For a sustained targeted threat, Apple says all of your devices should have Lockdown Mode turned on for complete protection.
What to do if the iPhone is already missing
Use Find My or iCloud.com to mark the iPhone as lost as soon as possible. Apple says Stolen Device Protection’s Security Delay is designed to provide time to mark a device as lost and secure the Apple Account. Whether the phone can be located or reached depends on circumstances; do not assume it will be online or locatable. Apple’s Stolen Device Protection support page describes this role of the delay.
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