Apple has announced that NSAllowArbitraryLoads will not work soon. Therefore, in iOS 10, I have this in my info.plist:
NSAllowArbitraryLoads
NSAppTransport
NSAppTransportSecurity NSAllowsArbitraryLoads
You can use the above condition if you don't want to support https(TLS 1.2). But you have to make sure it will be a temporary fix. From earlier 2017 Apple make https (TLS 1.2) as mandatory