After lollipop update the phone’s performance has improved but I personally feel the battery life is not as how it was during the kitkat version. Must improve the battery standby time. Some useful features like volume silence and vibration options on long pressing the power keys, turning off airplane mode from lock screen, fast forward and rewinding option through the scroller in lock screen while playing music are missing after the update.
Most importantly hours used after 100% charge is missing after the update.