Repurpose an Old iPhone: The Perfect Music Box for Kids

Which old iPhone works as a kids music box?

Any iPhone 6s or newer with iOS 16+ is compatible. That covers devices from 2015 onwards.

Compatible models:

iPhone 6s / 6s Plus (from ~€20 used)
iPhone 7 / 7 Plus
iPhone 8 / 8 Plus
iPhone X, XS, XR
iPhone 11 and newer

Used devices are available for €20–60 – far cheaper than any toy music box.

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How do I set up the iPhone as a kids music box?

4 steps to a finished kids music box:

1. Reset iPhone (optional): Settings → General → Transfer or Reset iPhone → Erase All Content and Settings. 2. Install RadauApp: Download free from the App Store. 3. Set up parental area: On first launch add content – Apple Music playlists, podcasts, MP3s or web radio. 4. Enable Guided Access: Settings → Accessibility → Guided Access. This locks the child into the app.

Total time: about 10 minutes.

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What does the setup cost?

RadauApp: free
iPhone 6s used: ~€20–40 (or already at home)
Apple Music: optional, €10.99/month

Compare: a new Toniebox costs ~€100, each figure €15–20.

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Tips for everyday use

Get a rugged case – kids drop things.
Connect a speaker for better sound (Bluetooth or 3.5mm).
Disable mobile data: Settings → Cellular → turn everything off.
Set up Screen Time for additional parental controls.

Download RadauApp free →