crDroid Android is a great alternative to Havoc OS. It offers a lot of features and because it is based on Lineage OS there are no bugs. This rom is just as good as
Havoc OS but has not quite as many features.
Bugs: None:
Battery life: Stock (Up to 5 hours screen on time)
Stability / Speed: Just like the Stock Rom. It's perfect.
All functions of the Stock Rom are included.