Proximity sensor does not work when using Siri to call from locked screen
I have an iPhone 6s Plus and I’ve noticed the proximity sensor doesn’t work when I make a call using Siri from the locked screen. Any other time it works just fine (when calling after dialing manually or using Siri to call when the screen is unlocked). I have an iPhone 6s, and the proximity sensor works when the screen is locked, so it seems to be an issue with the 6s Plus.
I’ve tried force resetting the device and updating to the latest software version, but no luck.
iPhone 6s Plus