If you own an older Apple device like the iPad 2, iPad 3, iPad Mini 1, iPhone 4S, or iPod Touch 5th Generation, iOS 9.3.5 (or iOS 9.3.6) is the end of the road. Apple no longer updates these legacy 32-bit devices, and opening the App Store often rewards you with a frustrating "Requires iOS 10.0 or later" message.

: Open the App Store and navigate to the Purchased tab at the bottom.

Built into the OS or easily downloadable, it handles PDFs and EPUB files seamlessly via iTunes sideloading.

Finding working software for these legacy devices is a massive challenge. Most developers have dropped support for iOS 9, and searching the App Store often results in a "Requires iOS 10.0 or later" error.

The default Safari browser on iOS 9.3.5 is quite outdated and may struggle to correctly render many modern websites. Having an alternative browser can significantly improve your web experience.

If you open the App Store on an iOS 9.3.5 device and attempt to download a popular app like YouTube or Netflix, you will likely encounter an error message stating that the app is incompatible with your device.

You rely on modern social media, banking, streaming, or two-factor authentication apps.