The iPhone Security Settings Checklist Worth 20 Minutes of Your Time

Eleven settings on your iPhone control almost everything about how safe your phone, your accounts, and your money are. Going through them takes about twenty minutes, and you only need to do it once. Nothing here costs money, and you cannot break your phone by following these steps, so there is no reason to be nervous.

Each item below tells you exactly where to tap and what the setting does in plain language. Work through them in order with your phone in hand. If a setting is already switched on, that is good news; just move to the next one.

Lock the front door: passcode and Face ID

A six-digit passcode is the lock on your phone, and it is the foundation everything else rests on. Open Settings, scroll down to Face ID & Passcode (or Touch ID & Passcode on older models), and tap it. You will be asked for your current code. If you have never set one, choose Turn Passcode On and pick six digits that are not your birth year or 123456.

On the same screen, turn on Face ID or Touch ID so your face or fingerprint unlocks the phone instantly while the passcode stays as a backup. This is both safer and far quicker than typing. Scroll down and check that you understand Erase Data: when switched on, it wipes the phone after ten wrong passcode attempts, which protects your data if the phone is stolen.

Protect the master account: your Apple ID

Your Apple ID is the account that holds your photos, your purchases, your backups, and your location. If someone gets into it, they get everything, so this is the most important account to protect. Tap your name at the very top of Settings, then tap Sign-In & Security.

Make sure Two-Factor Authentication is turned on. This means that signing in on a new device needs both your password and a code sent to a device you already own, so a stolen password alone is useless. While you are there, check that your trusted phone number is current, because that is where Apple sends recovery codes if you are ever locked out.

The full checklist, top to bottom

The table below gathers every setting in one place with the path to reach it. Tick each one off as you go. The whole list takes around twenty minutes the first time.

Let your phone fix itself: automatic updates

Software updates are not just new features; most of them quietly close security holes that criminals try to use. Turning on automatic updates means your iPhone installs these fixes while you sleep, with nothing for you to remember. Tap General, then Software Update, then Automatic Updates, and switch both options on.

If an update is waiting right now, install it before you carry on. Plug the phone in, connect to your home Wi-Fi so it does not use mobile data, and let it run. The phone will restart on its own and ask for your passcode afterwards, which is normal and means it worked.

Find a lost phone: Find My iPhone

Find My iPhone shows your phone on a map from any other Apple device or from iCloud.com, and it can lock or erase the phone if it is gone for good. Tap your name at the top of Settings, then Find My, then Find My iPhone, and make sure it is on along with Send Last Location.

Send Last Location is the clever part: it reports where the phone was just before the battery died, so a phone lost on a train is not invisible the moment it runs flat. With this on, a misplaced phone is usually findable, and a stolen one can be locked so the thief gets nothing useful.

Keep your screen private at the lock screen

By default, a locked iPhone can show the start of incoming messages and let anyone open the wallet or reply to a text. That is convenient but leaks information to anyone holding your phone. On the Face ID & Passcode screen, scroll to Allow Access When Locked and switch off anything you do not want a stranger to reach, especially Wallet, Reply with Message, and message previews.

You can also set message previews to show only when the phone recognises your face. In Settings, tap Notifications, then Show Previews, and choose When Unlocked. Now the content of a text stays hidden until you are looking at the phone yourself.

Tame tracking and location

Apps love to follow what you do and where you go, and you can shut most of that down without losing anything useful. Tap Privacy & Security, then Tracking, and switch off Allow Apps to Request to Track. From now on, apps cannot follow you across other apps and websites to build a profile of you.

In the same Privacy & Security menu, tap Location Services. You will see a list of apps and what location access each one has. A map app reasonably needs your location, but a torch or a game does not. Set anything questionable to While Using or Never, and your phone shares far less about your movements.

Strengthen your passwords with the built-in keychain

Your iPhone can create and remember a long, unique password for every website, so you never have to invent or memorise them. This matters because reusing one password everywhere means a single leak unlocks all your accounts at once. Open Settings, scroll down to Passwords, and tap it; you may be asked for Face ID or your passcode to get in, which is the phone protecting that very list.

Inside, tap Security Recommendations. The iPhone lists any saved passwords that are weak, reused, or known to have leaked in a public breach, and it offers to change them for you with a single tap that opens the right page on each site. Work through that list when you have a quiet ten minutes. From then on, when a site asks you to set a password, the phone will offer a strong one and save it for you, so signing in later is automatic and far safer than anything you could type from memory.

Review your sharing with Safety Check

Safety Check gathers, in one place, everyone you currently share your location, photos, or other information with. It is useful for spotting arrangements you set up long ago and forgot about. Open Settings, tap Privacy & Security, then Safety Check, and follow the prompts; you can review each person and each app, then stop any sharing you no longer want with a tap.

This is also where an Emergency Reset lives, which instantly cuts off all sharing if you ever feel you need to. You do not have to use it, but knowing it is there is reassuring. Take a moment to glance through who has access, because family-sharing arrangements and old apps can quietly keep more than you expect, and a yearly check keeps the list accurate about what you really use.

Security is not a one-off job, but the yearly version is short. Once a year, reopen Software Update and confirm automatic updates are still on, glance at Security Recommendations under Passwords for any new weak or leaked entries, and run Safety Check to see whether any old sharing has crept back. The whole review takes about five minutes when nothing is wrong.

It is also worth checking that your trusted phone number for the Apple ID is still a number you actually use, especially if you have changed your mobile contract. If that number is out of date and you ever get locked out, recovery becomes much harder. A two-minute check now saves a stressful afternoon later, and it is the kind of small habit that keeps everything else you set up working quietly in the background.