I regret updating my Z1. Kitkat (4.4) was perfect. After updating to Lollipop (5.0), the once perfect battery life is now trashed. It drains in hours without any warning. Going from 90+% to 0% suddenly. Countless attempts to solve this have been in vain. Can’t even easily downgrade it back.
I was planning to hold onto this phone for a little while longer and do a proper upgrade. But after a year and a half, my hand was force so I went for the OnePlus One.
Awesome phone (according to the reviews anyway) for such a low price.