Apple developer news site in today’s update, to the developer on the Mac and iOS applications, need a 64-bit reminder. Since June 2015, Apple has asked all the iOS App Store submitted to the new iOS applications and application updates are supported 64-bit, then gradually out of 32 applications, and plans to completely stop the 32-bit application in the iOS 11 system.
Although Apple has been using 64-bit applications for several years, still some of the old iOS applications have not yet been updated. After upgrading to iOS 11, when trying to open a 32-bit application not only can not run but also jump out of the reminder: “These application developers need to upgrade to compatible with iOS 11 system.”
Reminder: The new iOS app and app updates submitted to the App Store must support 64-bit. IOS 11 system no longer supports 32-bit applications and 32-bit applications that were previously installed on user devices will not start. If you have not upgraded your application to support 64-bit, we recommend that you submit your update as soon as possible so that users can continue to use your app after users upgrade iOS 11.