Guide with all the necessary steps for you to change the LCD screen of the Samsung Galaxy Tab 3 (7.0) yourself
As an alternative to the air gun, I suggest the use of HOT GLASS, a high thermal retention blanket.
Insert the HOT GLASS in the microwave for the time specified in the instructions.
To heat it evenly, it is necessary to interrupt the microwave every 30 seconds to distribute heat throughout the HOT GLASS with your hands.
Apply heat to the edges of the screen for a couple of minutes.