Lock Screen Privacy on iPhone: 5 Settings to Change in 3 Minutes

Your iPhone can be locked and still show the world your private messages. A text with a bank code, a doctor's reminder or a chat from your partner can pop up on the lock screen for anyone standing next to you to read. Someone who picks up your phone can also do more from the lock screen than most people expect. Three minutes in Settings fixes most of it.

1. Hide message previews until you unlock

Open Settings > Notifications > Show Previews and choose When Unlocked. Notifications still arrive and you still see who they are from, but the text only appears after Face ID or your passcode recognises you. Choose Never if you want the text hidden even after you unlock.

This one setting matters most, because sign-in codes arrive by text message. If the code shows on a locked screen, someone holding your phone can read it without knowing your passcode.

Per app: you can keep previews for harmless apps and hide them for the private ones. Go to Settings > Notifications, tap the app (Messages, WhatsApp, your email, your bank) and set Show Previews for that app alone.

2. Decide what works while the phone is locked

Open Settings > Face ID & Passcode (or Touch ID & Passcode), type your passcode and scroll to Allow Access When Locked. Each switch here is something a person can use without unlocking your phone. Consider turning off:

Control Center - otherwise anyone can switch on Airplane Mode from the lock screen, which makes a lost phone harder to find.

Reply with Message - otherwise someone can answer your chats from the lock screen.

Notification Center - otherwise older notifications can be scrolled through without unlocking.

Accessories - keep it off so a cable or gadget cannot connect to a phone that has been locked for over an hour.

Keep what you really use, such as the camera or the flashlight. Everything else can wait for Face ID.

3. Use a stronger passcode

Still on a four-digit code? Tap Change Passcode, then Passcode Options, and pick a 6-Digit Numeric Code or a Custom Alphanumeric Code. Avoid a birthday, a year or 123456. With Face ID doing the unlocking most of the time, you will rarely type it anyway.

4. Lock the screen sooner

Open Settings > Display & Brightness > Auto-Lock and pick 30 seconds or 1 minute. A phone left on a café table locks itself before anyone has time to read through it.

5. Turn on Stolen Device Protection

On recent versions of iOS, open Settings > Face ID & Passcode and switch on Stolen Device Protection. When your iPhone is away from familiar places such as home or work, sensitive changes need Face ID or Touch ID, and some of them, like changing your Apple Account password, add a one-hour wait. A thief who watched you type your passcode can no longer use it alone to take over your accounts.

What a VPN changes, and what it does not

A VPN encrypts the connection between your device and the VPN server, so the owner of a café or hotel Wi-Fi cannot read what you send on the way out. It does nothing for a message that is readable on your lock screen, or for someone holding your unlocked phone. The settings above cover the phone in your hand; a VPN covers the network around it. Use both.

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