Battery last less than 3 hours of screen on time

[Alanslade]

Good evening everyone. It's been at least 10 months since I had this problem. My X Compact, as I always read, should last an entire day, with more than 3 hours of screen on time. Instead, my phone barely reach the night with 2:50 hours of screen. No matter how many times I have donne a factory reset, or done a repair with Xperia Companion  (the last one 3 months ago). My phone discharges at astonishing speed. At 13:00 in 3G, I only have 60% of battery left, with only 30 minutes of screen.

The process that is at the top of the battery consumption is always "Phone idle".

I feel like I have been cheated by Sony.

Is there a solution for this problem? 

I don't want this phone anymore. 

[Strampke]

I like to have a new phone too, but you and me we will have to live with it for now.

Read this.

Goto settings and type consum in the search field.

You will end here.

Be a doctor of your own device.