The only additional tool that doesn’t comes up with the kit is a heat gun where hair dryers can also be used as an alternate to use use during the process in order to melt the glue holding the broken screen to the phone body.
Steps to replace Galaxy S3 Screen
Take the battery out; this is important to avoid battery conducting additional heat from the heat gun/hair dryer; since it may result in a battery explosion.
As shown in the image above; use heat gun/hair dryer to heat all four sides so that the sticky glue holding screen to the panels becomes soft; if you attempt to do it without heating, it may result in damaging internal circuits as it will be different to pull the screen off. Once it has been heated; for a few seconds gently pry inside the glass of the screen to scope it out; use the pry tool to pluck out fragments of broken glass if it is broken from the corner.
Use the dryer or gun if the glass gets stucked; It is a good idea to start this procedure from one corner. As show below we started chipping the screen from speaker side to its bottom.
After the screen is fully off the board, use a tooth brush or a towel cloth to clean the glue off. Make sure you clean the surface properly.
Now you have two options, either use two side tape to hold the new screen or you can also use small drops of super glue on four corners. Before putting the new screen back clean the LCD of mobile once more so there are no dust particles. Now gently put the new screen back on and press it for few minutes.
That’s done now; your phone is ready with the new screen.
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