I am using XOLO Q100i mobile which i purchased two months back. Initially it was having android 4.2.2. Last week I got update for 4.4.2 and since then I am facing this battery problem where, the battery percentage remains constant for long period time and after that it rapidly drops to 0 and switches off. I am facing this problem only after I had updated it to 4.4.2 (it was system update, i didn't do it manually) One example case is, even after using browser with 3G internet for 30 mins, the battery remains at same percentage. Yesterday I even did factory data reset but still this problem is persisting. Any solution for this problem?.