If you own a HTC One M9 go check for an update as its just arrived giving some improvements on the camera and a better battery life,the usual bug and system enhancements are also in the update.
Some apps have been using much power and twitter has been one of those which topped my daily consumption in the app department.
The software version is 1.40.401.5 and consists of 526.99 MB so use your WiFi folks..We will see how it goes over the next few days,if you have seen any changes do tell us below..Note the update took us 1 hour.