Now, scroll down and tap on the application that you want to work with. Following the same instructions as above, go to the Siri & Search settings. How do I customize Siri for individual apps?Īpple does give you some options for customization on a per-app basis. If you’re having trouble with only one device make sure the microphone is clean and free of debris and that your OS is up-to-date. This should fix Siri if she isn’t responding on any of your devices.