NOTE: It is suggested to remove the battery, S Pen, SD Card, and SIM card (if your phone uses a SIM card).
Heat at a low degree such as less than 80℃ because the adhesive is not so strong. Heat makes it's easy, but you also can gave up heating and cut the adhesive sticker directly. Please be careful.
Cut LCD screen adhesive sticker carefully and slowly.
Be very careful once you get to the bottom part of the phone, take your time, and be very careful not to cut the flex of the Back and Menu buttons. Use the next set of images to examine how close they are to the edge so you don't accidentally cut them!
Insert the spudger underneath the LCD to cut the adhesive in the middle part. The adhesive is strong so make sure you are underneath the copper insulation before separating.
Step 4
Notice 1: The adhesive is in the red line.
Notice 2: If you insert the spudger from right side, keep the length of the tool in less than 2.2cm, which is for avoiding damaging the home button flex.
Notice 3: If you insert the spudger from left side, keep the length of the tool in less than 4.4cm for the same reason.
Notice 4: Pay attention to the part with LCD screen flex. When you cut the adhesive, leave the top part alone to avoid damage the flex. But if it's the broken screen, you don't need to worry so much.
Be careful with the bottom side because there are the soft keys. If the adhesive in the red line don't function any more when you place the new LCD screen, you can choose to use the 3M double side tape. It can help to fasten the new screen together with the LCD screen sticker.