As of writing this update, the internet connection became unstable this couple of days that I needed to sit nearby my window to get some signal. 

The Internet speed became suck!!! I have to enable the airplane mode and turn it off to refresh my connection. I can't be precise on what made it acting this way... Or maybe becauseI used Globe sim card which widely known as a slow and having bad internet connection. These are the only changes I had encounter.