It's been a bit buggy since its release, sometimes a voice command registers but the action doesn't perform, this is usually between updates of minor or major version of iOS. However, when it works, it works pretty well. I can do about 90% with Siri and Voice Control. The other 10% is a bit annoying - it could be that there is a voice control command and I just don't know it, but usually resort to touch which is annoying.