Hi all, I have had Z1 since December and i love the phone. Battery life has been great but last few weeks its gone down badly. I have all the power managment tools turned on like Stamina, low battery mode etc since i got phone. I was able to get power managment to say battery will last over 1.5 days and even 2 days with Stamina mode on. Last few weeks battery has gone down loads. I checked the power management settings this morning and everything is still on but it said 17 hours on Stamina mode and 5 hours without it. This is really low and has decreased massively. I have uninstalled apps i dont use anymore and same thing. I let my phone die to 0% about once a month and recharge it again. Version = 4.3 Build = 14.2.A.0.290 Anyone have any ideas on what has caused this?