To all of kind A33 users out there, mind me asking, are you facing the same problem as me? Yes, battery drain problem. Got this phone for past 2 months now, already satisfied with its features, design and performance. But recently, I found my phone's battery drains so much worse than before. Like, I can lose my 3% battery for just 5 minutes (Yes, I count it). And, I need to plug my charger on 3-5 times a day. What a ridiculous! I don't know what causes this problem to be more and more worse as the time goes on. To all kind person out there, if you do know how to fix this problem, please let me know.