This is a how to remove , separate , and replace a cracked
S3 screen from the digitizer by melting/softening the adhesive glue (in other words it is how to replace JUST THE GLASS)
Many people out there still say that the S3 's glass can not be separated from the digitizer and that the digitizer and glass but be bought "fused" together from OEM..this is not true. It can indeed be separated using the the process below and it will work just fine and be just as responsive as when you first bought the phone. Video Proof below.
PLEASE SEE THESE VIDEOS For screen removal from digitizer and Use as reference
The screen/glass part u are replacing looks like this
(i know it doesn't look like it is glass but trust me it is glass, it is about as thin as 5 sheets of paper):
video thanks to: marcustaz
This is how i replaced my screen and tools needed:
***Lots of Patience and carefulness *** (about 30 mins if u done before...about 60-90 mins if its your 1st time)
*** wear PROTECTIVE GOGGLES - EYE GLASSES (yes there is a HIGH POSSIBILITY that small glass shards may fly and glass in the eye is not fun)***
1) replacement screen - with no digitizer (exact pictures of what u need to buy are the pictures above..just match your color) ($25 USD aprox on Amazon - Cheaper on Ebay $18 USD) (The same screen fits all models just match the color...Samsung Galaxy S3 III T-mobile SGH-T999 / AT&T SGH-i747 / Verizon SCH-i535 / Sprint SPH-L710 / US Cellular SCH-R530 / GT-i9300)
2) exacto knife ($5 USD aprox)
3) heat gun ($20(harborfreight) for a cheapy....or $40 (homedepot) for a good one with adjustable heat)
***** HEAT IS CRITICAL, most people faill because they did not heat up the glass enough ( MUST BE around 180F)****
4) empty cereal box or cardboard calendar (or something similar that is comparable in sturdiness yet is "not too solid")
5) 90% rubbing alcohol ( $3.. make "damp" on a microfiber cloth or cotton ball (cotton-ball kinda makes a mess) removes any excess glue stuck to the digitizer)
6) microfiber cloth (available from .99 cent stores or dollar stores)
7) tweezers (.99 cent store ...or your moms/girlfriends/wife's beauty box..LoL)
OPTIONAL TOOLS BUT HELPS ALOT
*** an extra hand or two (1 or 2 more people helping is a big help)
*** laser thermometer (to make sure u do not overheat the phone, try to stay under 200F degrees with an average of about 180F degrees, slightly going over 200 does not hurt but i do not recommend)
*** thick leather gloves/welding gloves (prevents your hands from getting burned while someone else is heating the phone and maintaining the temp u can be easily removing the screen...at 180 degrees the glue and glass separate from the digitizer like BUTTER and the gloves protect you from getting burned by the heatgun!!!)
***Magnifying glass (to be able to make sure the glass fragments are completely removed from the digitizer so the new screen will sit flush)
*** thin latex/rubber gloves (when putting on the screen so there are no finger prints)
*** duck tape (hold glass together so it doesn't "fall apart" while removing)
Instructions on how i did it below:
Remove the battery , sim card, micro sdcard. Apply ductape or some kinda of good heat resistant tape to the top of the glass screen so the broken glass stays intact when removing. Put on your safety glasses/eye protection (believe me i highly recommend this regardless of how dorky you may look, if glass from the phone goes in your eye ...well you have been warned). Grab the exacto bladed and lightly apply pressure with it between the glass and the outer grey plastic trim and then outline the entire outer edge of the glass. Put on some heat resistant gloves (gloves that u wont feel the burn) Heat up your heatgun and heat the phones screen to around 180 Degrees Fahrenheit ...you can know the temp by using a laser thermometer (try not to go over 200 degrees). NOTE: U must remove the glass when its at around this temp, failure to do so will make it hard to remove the glass from the digitizer. Try to heat the entire phone evenly by using a "circular" or "side to side" type of motion when applying the heat. Find the outer edge of the glass and find a place in the corner to begin the removal. I recommend beginning on the top left side of the phone (where the S in SAMSUNG side of the corner) is at. Once the phone is heated to approx 180 degrees you can begin to lift the glass. (i do not recommend lifting in the middle of the screen or any "black part" of the screen as you can risk damaging the digitizer, the outer edge (where it is white/blue) is the safest spot to begin separation.) If you don't have access to a laser thermometer then you can risk it and just take your time till you notice the glass begins to "lift/separate" . Once you have a decent amount of the glass lifted (just enough to put the cardboard in) you can shove a piece of the cereal box inside and begin to use the cereal box to lift the rest of the glass. Continue this processes till the glass is all lifted and removed. When you start approaching the bottom of the phone where the button is at BE CAREFUL...try to go around the bottom and you will also notice 2 " touch ribbon light sensors"(look at the attachment pictures BELOW i labeled the light/ribbon sensor). They can removed from the glass using the heat gun and the exacto knife...it should lift right up and separate from the glass. Once u separate the ribbon your should be all done removing or close to done removing the glass from the digitizer. If by this point you haven't already removed the glass continue to remove till all the major pieces of glass is removed. Once the major pieces of glass are removed you can now put on some latex gloves and Remove the excess glass on the corners using the exacto knife and the tweezers. Carefully remove the small pieces of glass on the digitizer using a 90% alcohol LIGHTLY DAMPENED microfiber cloth. DO NOT APPLY HEAVY PRESSURE TO THE DIGITIZER when tiny glass is still on there (instead just kind of gently sweep it...using a new paint brush might even help) when removing the small glass fragment, NOTE that if you do apply too much pressure to the digitizer u risk the glass shards scratching or denting the digitizer!!! Once the glass is all removed and shards are gone you can now clean any fingerprints lint dust or oils using a dry microfiber cloth by gently applying LIGHT/SOFT pressure. Leave the glue on the outside edges of the phone and the bottom and top of the phone...just make sure the digitizer is spotless. Once everything is clean and the digitizer is spotless you can now install the screen. start from the bottom of the phone and proceed to put on the screen, make sure the "push" button is lined up and the line up the "light-sensor-ribbons buttons". the sensor ribbon buttons should just stick to the glass and line up with the screen part. Once the button is lined up you can now line up the rest of the screen and gently push down. The screen should be stuck into place by the existing glue on the outer edges. While holding the screen in place carefully put the battery in and turn on the device and make sure the buttons and screen and everything works properly and make sure the "lights" on the menu buttons work. Once you verify everything works and looks beautiful you can take the battery out one last time. Using the heatgun reheat the screen to melt the adhesive glue to the screen. Once the screen is heated back up to 180 degrees gently push on the glass and press for about 10 seconds and make sure to press in the outter edges of the glass where u left the glue. Let the phone cool off and you are good to go. Have fun using your S3!! This sounds fairly long and hard, but its not as hard as it sounds..its actually fairly easy and should take the average person about 50-70 mins first time. Experienced person about 20-40 mins.
i figure with the videos above you should be able to figure it out. Ill probably be adding more detailed info if this thread becomes popular. Good luck guys/gals
Q1) How do i know if its just my glass screen and not the phone itself that's not working?
You will know if your phone screen lens cracked, but LCD display works. In other words you will know that its just the glass that's broken if your phone currently works perfectly fine and the touch screen works fine BUT the only thing wrong with the phone is the screen being physically cracked/scratched. If this is your case then the instructions above will work on replacing the glass.
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