This is my ini setting:
[/Script/IOSRuntimeSettings.IOSRuntimeSettings]
SigningCertificate=iPhone Developer: ***
MobileProvision=UE4Game.mobileprovision
MinimumiOSVersion=IOS_8
bSupportsMetal=True
bDevForArm64=False
bSupportsOpenGLES2=True
bCookASTCTextures=True
ipainstaller tdc418.ipa on ARM32 iPhone, I get this: Your device does not support arm64 capability.
The same setting, UE4.13 & UE4.172 just fine.