Whether you have an iPhone 15 or not, install iOS 17.0.3 right now

Macworld
While we’re still waiting for several new iOS 17 features to arrive, Apple has released iOS 17.0.3 and iPadOS 17.0.3, the third small update for iOS 17 in less than a month. For iPhone 15 Pro owners, this is a must-download. As we previously explained, some users have been experiencing overheating during certain tasks, which Apple has chalked up to some bad app updates as well as a bug in iOS 17, which has been fixed with this update.
Apple’s release notes for iOS 17.0.3 say