I’ve had an HTC Desire 601 for a few months now and have generally been very happy with it. Generally the battery has lasted about 30 hours with minimal use, but last week HTC released a software update which meant battery the battery life went to about 6 hours without me even using it!
I was starting to consider installing Cyanogen in the hope that it would reduce the amount of bloat running in the background and therefore improve battery life. However after trawling various sites and forums I found a much simpler, less scary solution that doesn’t even involve a factory reset so you don’t lose any of your apps or data (although the usual backside-covering disclaimers apply — all advice on this blog comes without warranty and you follow this entirely at your own risk).
This guide is based on a forum post on a similar issue for the HTC One (thanks to "padlnjones" for this). I’ve modified the instructions slightly to make them a bit more complete and hopefully to make the information easier to find in future.
- Go to Settings > scroll down and go to Power, then scroll to the bottom and disable Fast-boot mode.
- Power the phone off.
- Press and hold the volume down button and then while still holding volume down, press the power button as well.
You will get a menu giving you options such as: 'Fastboot', 'Recovery', 'Clear Storage' etc.
- Navigate to 'Recovery' using volume buttons, then press the power button to select.
Momentarily it will change to an image of a phone with a red triangle and exclamation mark.
- Press and hold volume up then press the power button for about 3 seconds then let go.
A new screen will give you options like 'reboot system now', 'wipe cache partition', 'wipe data/factory reset' etc.
- Navigate to 'wipe cache partition' the volume buttons and select with the power button.
- Once the operation is complete, navigate to 'reboot system now' with the volume buttons and select with the power button.
- When the phone has booted back to normal, go to Settings > Power and re-enable Fast-boot.
Aside — by the way I do actually like the tweaks and refinements added by the software update, especially the ability to turn off the slightly pointless extra HTC “blinkfeed” home screen.