@2ck @freemo
My phone has a strange case of touchscreen glich where it doesn't detects my touch until I press my finger very very hard on the screen though this problem is easily solved by just locking and unlocking the phone
After going through this problem for 3 years the most plausible answer seems to be static electric charges getting collected on the screws inside probably.
@freemo
That's a good point. Actually many phones reset their screens apparent capacitive threshold (the limit where it differentiate between an actual touch and just atmospheric charges and stuffs) when unlocked or locked. This same effect is also achieved by resetting and testing the screen through Android's built in test system.
@2ck
dope. thanks, @freemo