Use Guided Access to Lock Your Phone to One App
The Problem
You give your kid your phone to watch a video. They exit and open your banking app.
The Hack
iPhone: Settings > Accessibility > Guided Access > On. Open the app, triple-click side button, tap Start. Phone is now locked to that app until you triple-click and enter your passcode.
Why It Works
Guided Access disables the home button, notifications, and all other app switching — the phone becomes a single-purpose device until you unlock it.
Pro Tips
- Set a different passcode than your phone unlock
- Also disable touch on parts of the screen
- Works for YouTube, Netflix, games — any single app
- Triple-click side button + passcode to exit