Recently, I noticed that Siri was not working for me when I launch apps or check for weather. I thought maybe it's because of VPN or whatever but just now, I tried it multiple times, did a reboot, etc and it is not working at all. When I launch Siri by pressing the home button, I hear the sound but nothing happens after that. I know my microphone is working fine because I am able to make phone calls and record voice using the iPhone. What gives?