Update your software On your Mac, install the latest version of macOS. If you can't install the latest version of macOS, try to install OS X El Capitan 10.11. On your Windows PC, install the latest version of Windows and download the latest version of iTunes. Update your iPhone, iPad, or iPod touch to the latest version of iOS or iPadOS.
Check Appleās System Status Page Itās possible the App Store isnāt working on your iPhone because of an issue with Appleās servers. Check out Appleās System Status page and make sure the dots are green, especially the first one next to App Store. kwLev.