Introduction
Use this guide to replace a cracked or broken display on your Samsung Galaxy S8.
Note: This guide instructs you to replace only the display while leaving the original frame, motherboard, and battery in place. However, some replacement screens for this phone come pre-installed in a new frame (a.k.a. chassis), which requires a very different procedure—transplanting your phone's internals and installing a new battery. Make sure you have the correct part before starting this guide.
This guide involves removing the rear glass cover, you will need replacement adhesive to reattach the back cover to the phone. If your replacement screen does not come with adhesive, you will need to use tape to secure it as well.
If the frame is damaged or bent, it's important to replace it, or else the new screen may not mount correctly and can suffer damage from uneven pressure.
The process of separating the display from the frame usually destroys the display, so don't follow this guide unless you intend to replace the display.
Tools
Parts
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Heat the iOpener for thirty seconds.
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Throughout the repair procedure, as the iOpener cools, reheat it in the microwave for an additional thirty seconds at a time.
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Remove the iOpener from the microwave, holding it by one of the two flat ends to avoid the hot center.
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Fill a pot or pan with enough water to fully submerge an iOpener.
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Heat the water to a boil. Turn off the heat.
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Place an iOpener into the hot water for 2-3 minutes. Make sure the iOpener is fully submerged in the water.
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Use tongs to extract the heated iOpener from the hot water.
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Thoroughly dry the iOpener with a towel.
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Your iOpener is ready for use! If you need to reheat the iOpener, heat the water to a boil, turn off the heat, and place the iOpener in the water for 2-3 minutes.
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In the following steps you will be cutting through the adhesive around the edge of the rear glass panel.
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The adhesive on the rear case is laid out as seen in the first image.
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The prying pattern as seen from the outside of the phone is as follows:
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Thick portions of adhesive
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Thin areas of adhesive
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Avoid prying here, to protect the fingerprint sensor.
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Once the back panel is warm to the touch, apply a suction cup as close to the heated edge of the phone as you can while avoiding the curved edge.
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Lift on the suction cup, and insert an opening pick under the rear glass.
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Repeat the previous heating and cutting procedure for the remaining three sides of the phone.
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Leave an opening pick on each side as you continue to the next to prevent the adhesive from resealing.
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Use the opening picks to slice through any remaining adhesive and open the phone slightly.
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Remove the glass from the phone.
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Use tweezers to peel away any remaining adhesive from the phone's chassis. Then clean the adhesion areas with high concentration isopropyl alcohol (at least 90%) and a lint-free cloth to prep the surface for the new adhesive.
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Peel the adhesive backing off of the new rear glass, carefully line up one edge of the glass against the phone chassis, and firmly press the glass onto the phone.
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Once the screen is warm to the touch, apply a suction cup as close to the heated edge of the phone as you can while avoiding the curved edge.
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If the phone's screen is cracked, the suction cup may not stick. Try lifting it with strong tape, or superglue the suction cup in place and allow it to cure so you can proceed.
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Lift on the suction cup and insert an opening pick under the display assembly.
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Repeat the previous heating and cutting procedure for the remaining three sides of the phone.
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Leave an opening pick on each side as you continue to the next to prevent the adhesive from resealing.
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Carefully lift the screen assembly away from the midframe, gently pulling the display connector through the hole in the midframe.
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Remove the screen assembly.
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After removing all traces of glue and glass from the frame, clean the adhesion areas with 90% (or higher) isopropyl alcohol and a lint-free cloth or coffee filter. Swipe in one direction only, not back and forth.
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After reapplying adhesive, follow these instructions in reverse order to reassemble your device.
After you've completed the repair, follow this guide to test your repair.
36 comments
Did my first repair two days ago. If you've done any other samsung repairs such as S7 or S7E, this will be cake for you to do. If you have big fingers like I do, the most challenging thing will be the fingerprint scanner flex on the back glass, connecting and reconnecting.
I go about this repair a bit differently if I want to salvage the lcd. I remove the battery motherboard and sensors , and start through the opening in the frame under the battery. I drip isopropyl alcohol along the perimeter of the battery opening applying heat and work a playing card in between the LCD and the frame, loosening adhesive as I go.
I like the way you think.
Thank you. My utterly novice self ordered only the glass, thinking it would be moderately easy for a layman. I didn't realize the LCD was nearly permanently stuck to it, and don't have $190 to replace it. I'll try your way. Thanks!
Great guide, very accurate. Be very careful along the right side of the device, as it is very, very easy to shear the connector flex in half. To avoid any chance of damage, I remove the board and front camera/sensor flex. It's an easy job, and saves a massive headache if any parts are damaged. Overall quite a familiar phone to work on, if you've ever done any S6's and upwards.
I didn't find this to be as hard as I had built it up in my mind to be; HOWEVER, saying that I need to say years ago I was the local Nokia service center in my town. But many years ago right after they got rid of analog times. Yeah. A classic installer/repairer mistake when starting something they haven't fixed or installed before is picking up the instructions, flipping through them; maybe even reading a section that is new-then tossing the instructions over the shoulder. "I got this." This usually comes right before something major gets broke. And I can tell you when you try to do it yourself and then mess it up horribly then take it to the repair shop. Well we called that "I can do it myself" syndrome and charged extra to put back together what they brought in in the box. Now knowing all this - I can't stress this enough because I am stupid, stupid, stupid. COVER YOUR SCREEN IN CLEAR BOXING TAPE AND READ ALL THE INSTRUCTION BELOW THROUGH TO THE END BEFORE EVEN ATTEMPTING THIS FIX. Take my advise.
windizy -
I didn't have an iOpener, so I used a wheat type heat bag. If you do this though, make sure you put a layer of plastic between your Mac and the bag, or you'll get condensation in places you don't want it.
Martin Gray -
I started out using the iOpener but switched to my wife's hairdryer. A heat gun or hair dryer proved to be much more convenient and is a time saviour. You can heat more and the glue becomes more fluid make the next steps with the opening picks much easier
Jan Van Puymbroeck -
I know this is obvious, but backup your iPad with iTunes before you start. I'd also turn off your passcode if you have one.
Laurie Higgins -
Ther first time you heat up the iOpener for this repair when its room temperature I had to heat it up for more than 30 seconds. I remember I had to heat it up for around 45 seconds. However, after that when you need to reheat it again during the repair 30 seconds will be enough.
Yousef Ghalib -
I used the wheat bag in a sensor microwave heating up to 65-70 deg C (155 def F).
ian cheong -
Get yourself a cherry pit bean bag the size of your iPad. Heat it, put the iPad on it for 3 to 5 minutes or so, reheat the cherry pit bean bag, again put your iPad on it. Then heat the iOpener and start working. The cherry pit bean bag will have to be reheated several times, but it will soften the adhesive so you have less problems with the iOpener
Tim Feyaerts -
The heating can be done very effectively (and quickly) with 3d printer heated bed. Make sure the bed is clean. Set the temperature to 60c, (130f ) and put the ipad face down for +/- 10 minutes. Repeat as needed throughout the “gentle prying” stages.
polleyphony -
The iOpener did not work at all for me.
I had to use a heat gun and bring the edges of the case up to ~200 degrees (used an infrared thermometer to measure) before the glue would weaken. This obviously superheated the metal frame, so I also had to wear gloves to handle the phone while prying the back off with the included picks.
Mike Jeanette -
Repair instructions worked like a charm. Had to be patient with the iOpener and getting the screen off. I tried repeatedly without success until shifting the suction cup a bit to the left side where perhaps the glue had loosened up a bit more.
Kyle -
The iOpener, in my opinion, is of no help. Many warnings to say “don’t warm it too much”, but the glue doesn’t melt if not warm enough. As a result, a complete waste of time and energy. In addition, too much liquid in it, so it doesn’t lay on the device on a sufficient surface. I took a hairdryer and it worked much much better.
laurentvidu -
I used an immersion bath to heat this to 180F and applied it to the device until the outside temperature of the opener read 150F with an IR thermometer. Removing the screen took very little force with this method.
breadandbits -
My experience. I was replacing the screen which had been cracked and a little shattered in some places. The iopener is pretty much useless, so was the suction cup. The suction cup would probably be more useful if I was doing something besides the screen. Also you probably want the clean the screen before using it so it can get good suction. I used a hair dryer on high for a couple of minutes at a time (someone on this tread suggested that). I used my exacto knife and a razor blade to get into the adhesive. First the exacto to get the initial cut, then the razor blade to go a little deeper. Could have probably just used the razor blade, but the exacto has a little more finesse. I got the razor blade in and a little under the glass then I used the picks to wedge in. I didn’t want to risk anything using the razor blade too much. Used tape to keep the shattered glass together.
trebor65 -
My experience pt2
Fortunately the shattering was mostly on the edges and most of it had adhesive on the back so it stuck together. Just take your time and work your way around following the guide to get the screen off. Have some goof off or goo be gone to clean the frame when putting the new glass on or putting the existing one back. (someone suggested that also, very good idea). Be careful of the LCD (you should know that). The cable on my LCD was pretty tight, so I propped it up while taking the cable cover off and when I put it back on I did the same thing. I just put a bottle on the battery and leaned the back of the LCD on that while attaching the cables and putting the screws back on the cover. Also be careful with the home button and the bracket on the back of it. I had enough old adhesive on left on the bracket that it stuck back to the new glass fine. So far only 12 hours in, so we will see how that holds up when the kids get at it.
trebor65 -
Another alternative if you do not have the iopener is to use a bed time hotwater bottle. Do not over fill it though. Just put enough hot water in to support the phone while you work around the adhesive.
I use both the hot water bottle and iopener together on Samsung's. It makes life easier
gazza667 -
I followed the directions and heated my iOpener for 30 seconds in a 1000 watt microwave, and it came out at 160 degrees F, as verified by a infrared thermometer. This allowed me to separate the last bit of the back of my Samsung S8, which was already coming off due to a swollen battery (hence the reason for the repair).
Dennis -
Hallo,habe den Akku erfolgreich getauscht.Doch seitdem gibt es bei Telefonaten eine Rückkopplung für den anrufenden.Bei mir ist alles normal.Woran liegt das?Mfg
Manu R -
If you follow these instructions, you will crack your screen like I did. Heating the iOpener for 30 seconds, using it to melt glue, then waiting 10 minutes to reheat is useless. The iOpener can be used to maybe warm the glue on whatever side you aren’t working on. You need a hairdryer and/or a heat gun to melt the glue and separate the glass from the iPad.
Anyone want to buy an old iPad with broken glass and a dead battery?
mpulliam -
Not everybody has a microwave. You should provide a target temperature for the iOpener and instructions for a conventional oven, or pot of warm water, or whatever. Although I will probably use a heat gun …
Esmond Pitt -
Three times heating opener and no luck. Tried pressing down gently on opener with a towel, and the opener broke. Wondering if I now replace table mats, fancy table cloth, etc. or will this stuff wash out.
Not impressed so far. Maybe the hair dryer next.
doug -
I support the comments about the iOpener. Everyone has a hair drier, FHS, so get a cheap IR thermometer (£18) and blow heat until the area is 60+ deg C. Still takes w while, and getting the screen off is v scary, but just add more heat if you feel resistance.
The rest of the kit is good, esp the magnetic screwdrivers.
Richard O'Brien -
No, everyone does not have a hairdryer. Some of us don’t even have hair. Thank goodness I already had an IR thermometer, though.
nin10doh -
#### WARNUNG WENN MINIMALSTER SPRUNG IM DISPLAY IST FUNKTIONERT DAS NICHT!!! ######
Hatte einen winzigen, minimalen Sprung im Display. Ich dachte es könnte gehen, weil der Sprung “abgeschlossen” war. Er hat in einer Ecke ein winzige Glasteil rausgeschnitten. NEIN! Geht nicht. Habe alles mit viel Geduld dem iOpener und einem Föhn erhitzt. Es ist trotzdem sofort über das komplette Display zersprungen…
T z -
I’ve started with iOpener but changed very quickly to a heatgun. That was more efficient.
Mizzoo, s.r.o. -
I could not get the iOpener hot enough to melt the glue on my ipad 6. I heated for 45 seconds once and it was boiling and it still never worked. Thank goodness contributors mentioned using a hair dryer. Using an 1700w hair dryer on high did the trick to get the screen off. Still took some time and the case got pretty hot but be patient. It took twice as long and a lot more patience to get the battery out.
Randal Haufler -
I have an Ipad with touch screen issue, if i replace this part it should be Ok?
janderson martin -
WARNING - DO NOT MICROWAVE ON A METAL MICROWAVE RACK
The metal microwave rack can heat up and melt through the iOpener cover letting the contents leak out.
Not a big issue for me as I have a heat gun and used that instead.
Run Up A Tree -
I opened my iPad with the iOpener. Be patient! It may take quite a bit longer to it the iOpener in the microwave than it says in the guide. My microwave can only do 800W and I had to put the iOpener in several times (maybe a total of 90-120 seconds). I recommend that you have the transparent side up an watch the bag carefully. As long a the bag doesn't bloat up and the liquid doesn't start bubbling you should be fine. But I recommend to take the iO out from time to time to check it. (More comments in Step 6.)
marcelflueeler -
I gave upon the I opener and used a hairdryer. (Fixed an iPad 6)
Tom Weber -
iPad mini gen5. I used the iOpener. My microwave is 1200w with carousel. 30 sec got the iOpener to 155ºF. For the 2nd heating, after 10 minutes sitting, the temp was still around 125º so I only cooked it for 15 sec. Not enough increase so +5 sec more which me to 165-170ºF. This should be considered ballpark info because who knows the real output of the various microwaves and the quality of the IR tool used to determine temp.
To successfully open my iPad mini I applied the iOpener twice to the left edge and twice to bottom. & once to R edge. Using the suction cup was difficult for me (I'm in my 70's so my hands don't work too well anymore). I had trouble holding the guitar pick and slipping them in (at an downward angle). In the end, sliding my thumbnail along the edge opened it very slightly and allowed the pick to get into the gap. I marked the ends of all my picks with a sharpie pen for the recommended 2mm insertion to avoid going in too deep. To get the screen open it took me approx 1 hour.
jharrison -
Can’t you just use a hair curler instead?
Aspect22 -
A hairdryer or heat gun works, if heating is kept around 100 deg C (212 deg F - boiling point of water). But… heating this way is cumbersome. Using a hotplate, set to 100 deg C, measured carefully with a fairly inexpensive IR gun, is simpler and easier, if you can afford the hotplate (I used an old pancake griddle with a thermostat knob). It works great for phones, setting them face down for 2 minutes, then picking them up with insulated gloves - cheap, wool gloves work fine. This may require repeated reheating to continue the display removal, but its much simpler.
Because its almost impossible to repeatedly lay an iPad/tablet on the hot plate, I propose an alternative.
Initially lay the larger iPad/tablet, face down, for 2 min, to heat all of the adhesive surrounding the display. Lift and begin the picking process describe in your removal steps. Then lay an iOpener on the hotplate for 2 min (already set to the exact, desired temp) to bring it to working temp for the remaining operations.
Dan Smith -
For iPads in particular, it makes sense to construct a simple, aluminum window frame, laid on a hotplate (see my comment above) that only touches the edges of the display, heating only the adhesive underneath. This prevents general heating of the entire device. Four strips of aluminum, placed together as a frame, would be the simplest and allow variations for all devices - envision it as a pinwheel of strips, radiating outward. Use it for any size device.
Dan Smith -
BTW, always read all comments at each step. New, and possibly useful, suggestions appear on occasion that can be crucial.
Dan Smith -