Yes, it is supported! From the docs.
- iOS
You will need a Mac computer to package your code project for IOS devices!
Setup your iOS development enviroment,
- unreal engine editor (4.10, 4.11, 4.12 or later)
- Create a new C++ code project without starter content
- Copy all files from SampleProject directory to your new project directory
- In UE4 editor File -> Refresh xcode project (optional)
- Exit from unreal engine editor
- your new project from epic launcher
- Click on rebuild missing DLLs when prompted
- Go to edit -> project settings -> iOS and import your mobile provision and certificate files
- Press the “ on iOS device” button