Apps Not Working On IOS 11 September 20 2017
If you attempt to open one of these 32-bit apps, iOS 11 will refuse to open it and will offer up a message that says the app needs to be updated to work with the new operating system.
You're also not going to find 32-bit apps available when searching in the new App Store, nor can previously downloaded 32-bit apps be installed through the Purchased tab. Apple has not widely publicized the imminent lack of support for 32-bit apps, so when older apps stop working tomorrow, it could come as a shock to the users who are still have them installed and use them regularly. Apple began transitioning to 64-bit apps when the iPhone 5s launched in September of 2013. All apps and app updates have been required to use 64-bit architecture since June of 2015, so all apps that are 32-bit have not been updated for at least two years.
Many app developers have gone back and added 64-bit support to older apps, but there are still bound to be many apps that lack support.
Current iOS 10 users can check to see if there are any 32-bit apps on their iOS devices in the Settings app. Go to General --> About --> Applications to see the "App Compatibility" section that lists any outdated apps.
iOS 11 is only compatible with devices that feature a 64-bit chip, meaning it works with everything that has an A7 or newer chip. Specifically, iOS 11 is compatible with iPhone 5s, SE, 6 Plus, 6, 6s Plus, 6s, 7 Plus, and 7, along with the new fifth-generation iPad, the iPad Air, the iPad Air 2, all iPad Pro models, the iPad mini 2 and later, and the 6th generation iPod touch.
Customers on older devices like the iPhone 5 and 5c that can't install iOS 11 will not be affected.