Technological limitations that have existed for 20 years have not been resolved
blue screen of death, lost connection, battery drain... are technology problems that have been familiar to mobile device users for the past 20 years, but up to now have not beenOne UI 5.1 update causes faster battery drain on some Samsung Galaxy models
the fact that new software updates cause slow, jerky, laggy or battery drain on older devices is not a strange problem in the smartphone world.Mountain Lion suffers from poor battery life
some recent mac users said that after installing os x 10.8 (mountain lion), their macbook pro and macbook air experienced battery drain.