iOS Security 101

How To: Use All 10 Fingerprints for Touch ID on Your iPhone — Not Just 5 of Them

While Apple has moved on from Touch ID to Face ID in newer iPhone models, there are still plenty of iPhones with fingerprint sensors — and they're all still supported in iOS 12, from the iPhone 5S to the iPhone 8 Plus. With Touch ID, you can register up to five fingerprints, but it doesn't stop there. Using a little-known trick, you can sneak another five fingerprints in there for a total of ten.

How To: Limit Ads & Advertising Companies from Tracking You on Your iPhone

Stumbling upon a specifically tailored advertisement on your iPhone can be a bit disconcerting, and that's exactly what will happen if you let advertisers track your data. Some of you may appreciate more relevant ads in your apps, but the rest of you might consider this a straight-up privacy invasion. Luckily, there are a few things you can do to limit their reach to you on your iPhone.

How To: Stop Your iPhone Photos from Broadcasting Your Location to Others

Every photo you take is brimming with metadata such as iPhone model, date and time, shooting modes, focal length, shutter speed, flash use, and geolocation information. Share these pictures with friends, family, or acquaintances via texts, emails, or another direct share method, and you unwittingly share your location data. Even sharing via apps and social media sites can compromise your privacy.

News: 30+ Privacy & Security Settings in iOS 12 You Should Check Right Now

There's always an iPhone in our list of top phones for privacy and security, due in large part to advanced security measures like Face ID, consistent iOS updates, and easy ways to prevent unwanted access and excessive data sharing. However, some of those options actually do the opposite and hinder security. It all depends on how you use your iPhone, but you should at least know everything available.

iOS Security: How to Untrust Computers Your iPhone Previously Connected To So They Can't Access Your Private Data

If you've ever connected your iPhone to a computer before, you know iOS prompts you to "Trust" the computer and enter your passcode to confirm. According to Apple, trusted computers can "sync with your iOS device, create backups, and access your device's photos, videos, contacts, and other content." That's a lot of permissions to hand off, especially if the computer's not your main laptop or desktop.

How To: Share Any Password from Your iPhone to Other Apple Devices

In iOS 11, Apple made it easier for you to share passwords with friends. Back then, it was just Wi-Fi passwords, which made sense. "What's the Wi-Fi?" gets old after a while. But now, whether you're running iOS 12 or 13, you can share any password you want with any iPhone around, all with one of iOS' best features: AirDrop.

How To: Check & Delete Devices Connected to Your Apple ID to Remove Items You No Longer Use

With the growing list of products Apple offers, the number of devices connected to your Apple ID can get quite extensive. Having all those devices connected to your Apple ID helps you keep track of them, but when it comes time to part ways with an Apple TV or Apple Watch, those devices can still be attached to your Apple ID. In some cases, this could affect the overall security of your account.

How To: Remove Unnecessary Profiles & Certificates on Your iPhone to Protect Your Privacy & Security

When you want to install a new tool or game on your iPhone, you go straight to the App Store to do so — but it's not the only place you can get apps from. Some developers use back alleys to get their apps to you, while others can trick you into installing them without giving it much thought. This can lead to malicious software running on your iPhone, software you'll want to get rid of asap.

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