In the last couple weeks I've had this issue crop up where Siri can't process any voice requests until I reboot the phone. Then it all works for a while but later in the day stops working again. I have a 6s Plus running 9.2.1. The problem may have begun with the .1 update but I am not certain. This issue happens whether I'm on Wifi or LTE. Either by holding down the home button or saying "hey Siri", the phone will take my request and confirm the text on the screen, but will not act on it. Examples are asking Siri to call my wife or play a song. After a minute of a spinning wheel, it reports that it can't complete the request. Any ideas? I don't really want to do a full restore, especially with 9.3 around the corner which will probably fix it. I tried logging out/in of my Apple ID and toggling Siri off/on. Didn't help.