iOS Hidden Features & Secret Settings

Every version of iOS contains features that Apple doesn't prominently advertise. These "hidden" features range from powerful productivity tools buried in Accessibility settings to secret gestures that can dramatically improve your iPhone experience. In this guide, we'll explore the lesser-known features available in current iOS versions, plus what new capabilities we expect to see when iOS 27 arrives.

Hidden Features Available Now

These are real, working features in current iOS versions that many users don't know about. You can try these on your iPhone right now.

Back Tap - The Secret Button

One of the most useful hidden features is Back Tap, which turns the back of your iPhone into a customizable button. You can double-tap or triple-tap the back of your phone to trigger almost any action.

Popular uses for Back Tap include taking screenshots, opening the camera, toggling the flashlight, or running custom Shortcuts. Since the feature uses the accelerometer, it works even with a case on your iPhone.

Hidden Trackpad in Keyboard

The keyboard has a built-in trackpad that makes precise text selection much easier. Simply press and hold the Space bar until the keyboard goes blank, then move your finger to position the cursor exactly where you need it.

Shake to Undo

Made a mistake while typing? Just shake your iPhone to bring up the Undo option. This works in most apps and can undo recent text changes, deleted photos, and more.

Hidden Level Tool

The Measure app includes a hidden spirit level. Open the Measure app and swipe left to access the Level tool - perfect for hanging pictures or checking if surfaces are even.

Accessibility Hidden Gems

Some of the most powerful "hidden" features in iOS are tucked away in Accessibility settings. While designed for users with specific needs, many of these features are useful for everyone.

Sound Recognition

Your iPhone can listen for specific sounds like doorbells, fire alarms, or crying babies, and alert you with notifications. This is incredibly useful when you're wearing headphones or in noisy environments.

LED Flash for Alerts

Make your iPhone's camera flash blink when you receive notifications. This is helpful in loud environments or when your phone is on silent.

Custom Vibration Patterns

Create unique vibration patterns for specific contacts so you know who's calling without looking at your phone. Go to a contact's settings, tap Ringtone → Vibration → Create New Vibration.

Reduce Motion

If iOS animations make you dizzy or you just want a snappier feel, enable Reduce Motion. This replaces zoom animations with subtle fades and can make older iPhones feel faster.

Useful Dialer Codes

These codes work when entered in the Phone app's dial pad and provide useful information or access to hidden settings.

Field Test Mode

Dial this code and tap Call to access Field Test mode, which shows detailed cellular network information including signal strength in decibels (dBm) rather than bars.

Check Your IMEI

Instantly displays your iPhone's IMEI number without needing to dig through settings. Useful when you need this information for support or selling your device.

Hide Your Caller ID

Add this prefix before any phone number to hide your caller ID for that specific call.

Developer Mode Features

Developer Mode unlocks additional options useful for developers and power users. To enable it, you need to connect your iPhone to a Mac with Xcode installed, then enable Developer Mode in Settings → Privacy & Security.

What Developer Mode Unlocks

• Ability to install apps from Xcode for testing
• Additional debugging options in Safari
• Access to developer-focused settings
• Performance tools and network debugging

What to Expect in iOS 27

Based on industry reports and Apple's roadmap, iOS 27 is expected to introduce several significant new capabilities, some of which may include hidden or power-user features.

iPhone Fold Optimizations

With Apple's foldable iPhone expected in 2026, iOS 27 will likely include new features for the dual-screen form factor. These may include hidden gestures for screen transitions, flex mode options, and specialized multitasking controls.

Enhanced Apple Intelligence

iOS 27 is expected to expand Apple Intelligence with new AI capabilities. There may be additional hidden settings for power users to customize AI behavior, similar to how current iOS allows disabling certain AI features.

New Accessibility Features

Apple consistently adds new Accessibility features with each iOS release. iOS 27 will likely continue this trend with new assistive technologies that also serve as powerful hidden features for all users.

Focus Mode Enhancements

Focus modes are expected to become more intelligent in iOS 27, potentially including automatic Focus switching based on context and location - features that power users will be able to customize extensively.

Keep Exploring

iOS is full of hidden features waiting to be discovered. The best way to find them is to explore every menu in Settings, especially Accessibility, and to keep up with each iOS update's release notes. Apple often adds new features quietly without much fanfare.

When iOS 27 arrives in Fall 2026, we'll update this guide with all the new hidden features and secret settings it brings. In the meantime, try out the features mentioned above - you might find some that completely change how you use your iPhone.