We found that in some iOS devices, our app will crashed sometimes when initializing FMOD. Here is the error log:
name = SystemNotInitializedException
reason = FMOD Studio initialization failed
callstack =
FMODUnity.SystemNotInitializedException…ctor (RESULT result, System.String location)
FMODUnity.RuntimeManager.Initialiase (Boolean forceNoNetwork)
FMODUnity.RuntimeManager.get_Instance ()

FMOD Version: 1.09.06
iPhone 6 iOS10.3.3

If you could send through a full log to support@fmod.com, I can take a look at that.

Are you able to reproduce this?
Any other information you have may be helpful as well.