After the 4.4.4 update, battery life on my Nexus 5 is so bad that I’ve started considering switching to iPhone and saying goodbye to Google:
Among the new problems which erupted with the Android 4.4.4 KitKat update includes bad battery life and keyboard lag in Nexus 5, Wi-Fi issues and random reboots in Nexus 7 , Dialer issues in Nexus 4, etc. These issues were present in the Android 4.4.3 KitKat also. The issues is [are?] not being faced by Nexus users only and users of other devices which run on the Android 4.4.4 KitKat are also facing issues.
The Android 4.4.4 KitKat issues have still not been resolved and Google Product Forums are overflowing with complaints from irate users who are facing problems after Android 4.4.4 KitKat updates. The latest problems include Wi-Fi issues, GPS problems, random freezing and lock ups, problems with email sync, and more.
I have deleted apps, turned off Auto sync and disable mobile data and WiFi when not using data services (which is almost all day). Yet in 5-6 hours, the battery is half full.
Android 4.2 was the last good release of Android. After that, its like installing Windows Vista over and over again.
Update: Here is something that may help improve the battery.
Go to Settings | Storage | Cached data and press Cached data, and then Ok to clear all cached data. I had also gone through the Settings | Apps list and cleared out the cache of each individual app but the master clear cached data should take care of it in one operation.
Go to Settings | Wi-Fi | select the 3 dot menu at lower right and then choose Advanced. On the dialog box there is an item “Keep Wi-Fi on during sleep”. Set this to either Only when plugged in or Never.
Re-boot the phone. The first time I rebooted, battery life was better but not back to where it had been. The second time, battery life is doing much better. Time will tell if this fixes the battery life problem introduced in Kit Kat. If this is the problem, it seems like an easy fix – the 4.4.4 release should just clear out the storage cache as part of the update and make sure the WiFi options are set appropriately.
Hopefully this resolves the problem. The battery life had become so poor after the 4.4.4 update that I charged up my old Windows 7.x phone and was planning to move my SIM card to that phone as a backup.