Apple released iOS 15 and iPadOS 15 in fall 2021, so you might be wondering if your iPhone, iPad, or iPod is compatible if you haven't upgraded yet. Check the lists below to see if your device supports Apple's upgrade.
List of supported iOS 15 devices
If you have an iPhone or iPod touch that supports iOS 14, you can upgrade to iOS 15. Apple's list of iOS 14 compatible devices matches iOS 15 exactly.
Here's a list of iPhone and iPod models that support iOS 15.
The iPhone 13 comes with iOS 15 installed.