I tested the mobile example and figured it runs only on arm64 (would make sense… )… i would like testing on iPhone 5…
The iPhone 5 is supported by UE4, you can find out more information about what devices and features are supported for iOS development here.
https://docs.unrealengine.com/latest/INT/Platforms/iOS/DeviceCompatibility/index.html
Nick Bullard-Bradley | EngineQA | Epic Games Inc.