Siri App Suggestions Not Working. If dust or dirt is covering your iphone microphone, it can affect the quality of sound received by the microphone. For starters, let’s try and reset your network settings.
If that's what you're seeing, simply stop using the app on your mac or other ios device first (click on the desktop or the home button) and then look and see if the suggested app shows up instead. On your ios 11/12 device, go to the home screen. Go to the settings app on your iphone, navigate to the particular app for which siri is not working, and open it.
If not, try the next solutions below.
But unlike switching off notifications for specific apps, this method comes with a few drawbacks. On your ios 11/12 device, go to the home screen. The issue is not affecting all users, nor is it affecting all apps. Remove siri app suggestions widget in ios 10 how to remove siri suggestion from spotlight search