I have been dealing with this issue since iOS 8 and it's driving me nuts cause I'm a little ocd. My standy and usage are the same no matter what. These are the same apps I have always used. I am not using any widgets. Occasionally I can reset network settings to fix it but the next time it charges to 100% the same thing happens again. I have even restored my phone and it comes back. Any ideas what the hell is causing this. I have also cleared out all running apps and restarted phone. I don't know what else to do.