Just to clarify, you are saying this method works for you on the Verizon version HTC One?
I ask because once you scroll to recovery and hit the Power button the phone reboots immediately showing the HTC logo. There is no "Blank, dim screen".
Originally Posted by
bikercr Power off phone (be sure to turn off fast reboot in settings first). Boot into recovery by holding volume down key and then holding power key until boot menu appears. Volume down to RECOVERY and tap power to select. Blank, dim screen appears. Quickly tap all three together: power, volume up and down, and release immediately. Black screen appears and sd card error message scrolls. After about ten seconds, recovery menu appears (all in very small font). Volume-down to "clear cache partition" at bottom of list and tap power key. Cache gets cleared. Then select reboot by tapping power key again. Done!
Device will now be a little snappier and some quirky behavior that sometimes develops is fixed. May want to do this every month or so to keep things running better, or if device behaving strangely and you want to try a quick fix that may work.