Are you looking for a guide to replace the broken or damaged screen of your Samsung Galaxy S21? Your search ends here! Follow our easy step-by-step guide to Samsung Galaxy S21 Screen Replacement.
Here is a simple step-by-step guide to replacing the defective or broken Screen of your Samsung Galaxy S21.
Step 1 Collect All Mobile Repairing Tools
It is necessary to gather all these mobile repairing tools to replace the screen of your Galaxy S21:
A Hair Dryer or Hot Air Gun
*A Set of screwdrivers
*A Plastic opening pick
*A Spudger
*A Suction Cup
*A pair of tweezers
*Isopropyl Alcohol
*A cotton bud
*New adhesive glue
*New Screen Replacement for your Samsung Galaxy S21.
Step 2 Power Off Your Samsung S21
Follow these steps to power off your Samsung Galaxy S21:
Press and hold the power button and volume down button together.
*Wait for a few seconds.
*A menu will pop up on the screen. This menu provides options for powering off, restarting, or putting the device into emergency mode.
*Choose the “Power off” option to turn off your S21.
Step 3 Use The SIM Ejection Tool
*Locate a small hole near the SIM Tray.
*Take the SIM Ejector Pin.
*Insert the pin into the hole.
*Gently press the pin inside.
*The SIM Tray will partially come out.
*Remove the SIM Tray with the help of your fingers. Keep it in a safe place.
Step 4 Heat The Phone Edges
*Take a heat gun or hair dryer.
*Adjust medium heat settings on your hot gun or hair dryer.
*Heat all four edges of your Samsung S21 from the back side for 5 to 6 minutes. Heat will soften the adhesive glue around the edges of the phone.
*It becomes easy to cut the molten adhesive.
*You can also use a hot plate to heat the phone at 90 centigrade for 1 to 2 minutes.
Important Tip
Do not overheat the phone, as too much heat can damage the internal components of your S21.
Keep the hot gun or hair dryer 10 cm away from the phone.
Step 5 Apply A Suction Cup
*Take a suction cup.
*Fix the suction cup near the lower edge of your S21 back cover.
*Hold the handle firmly.
*Pull the suction cup until a small gap forms between the rear cover and your phone frame.
Step 6 Insert An Opening Pick
*Take a plastic opening pick or tool.
*Enter the plastic opening pick in the gap between the rear cover and the phone frame.
Step 7 Cut Off The Bottom Adhesive
*Move the pick from one lower corner to the other to cut off the bottom adhesive.
*Repeat this movement 2 to 3 times to efficiently cut the bottom adhesive.
Step 8 Slice The Left Adhesive
*It is necessary to remember that the back camera of your S21 is at the top left edge of the phone. There is a little more adhesive around the back camera shell of your S21.
*It may be challenging to slice the adhesive around the upper left corner.
*Heat the top left edge again to melt the adhesive of the back camera shell.
*Slide the plastic pick from the lower left edge to the upper left corner. Repeat this to and fro movement 3 to 4 times to cut the left adhesive.
Step 9 Remove The Upper Edge Adhesive
*Slide the plastic pick from the upper left to the upper right corner of your S21 to slice the upper edge adhesive.
Step 10 Cut The Right Side Adhesive
*Keep sliding the plastic pick from the upper right edge to the lower right edge.
*In this way, you will cut the right-side adhesive.
Step 11 Detach The Back Cover Of The S21
*After slicing the adhesive around the edges of your S21, you can easily remove the back cover.
*Hold the back cover in your fingers.
*Lift the back cover.
*Remove the back cover of your S21.
Step 12 Unfasten The Samsung S21 Motherboard Bracket
*The motherboard bracket is attached to the phone frame with the help of five 4 mm long screws.
*Take a screwdriver.
*Unscrew the five screws of the motherboard bracket with the screwdriver.
*Keep the screws in a safe place, as you will need them during the reassembly of your S21.
*Use a pair of tweezers to unclip the motherboard.
*Remove the motherboard bracket with your fingers.
Step 13 Disconnect The Battery
*Pry up the battery press connector with a flathead spudger to disconnect the battery.
Step 14 Disconnect The Wireless Charging Coil Of S21
*Hold the motherboard bracket up with your fingers or tweezers.
*Unclip the press connector of the Samsung S21 wireless charging coil to disconnect it from the motherboard.
Step 15 Remove The Wireless Charging Coil
*Peel off the wireless charging coil with the help of your fingers to access the internal components.
Step 16 Unfasten The Loudspeaker
Unscrew the six 4 mm screws securing the loudspeaker to the phone frame with a screwdriver.
Step 17 Remove The Loudspeaker
*Pry up the loudspeaker with a spudger to unclip it.
*Remove the Loudspeaker from its recess with the help of your fingers or tweezers.
Step 18 Disconnect The Display Cable
*Use a spudger to pry up and disconnect the display cable.
*Remove the display cable from the phone.
Step 19 Heat The Screen Of Your S21
Set medium heat settings on your hot air gun or hair dryer.
Heat all the screen edges of your S21 to melt the strong adhesive around the edges of the screen.
Step 20 Cut Adhesive Around All Edges
Apply a Suction Cup near the bottom edge of the screen. Gently pull up the handle of the Suction Cup. A gap will form between the screen and the phone frame.
*Take a plastic opening tool or pick.
*Insert it into the gap between the screen and the phone frame.
*Slide the pick from one corner to the other to slice all the adhesive around the edges of the screen.
*Repeat this back-and-forth movement of pick 3 to 4 times to effectively cut the Adhesive around the screen.
Step 21 Remove The Damaged Screen
Cover the broken screen with transparent packaging tape to prevent physical damage. You must also wear glasses and hand gloves for safety.
*Remove the old screen of your S21.
Step 22 Attach The New Screen Replacement
*Compare the old screen with the new screen replacement of your S21.
*Transfer the old screen components to the new one.
*Dip a cotton bud into the isopropyl alcohol.
*Clean the remaining adhesive around the edges of the phone with this bud.
*Apply new adhesive around the edges of the phone.
*Carefully fix the new screen to the phone frame.
Step 23 Reassemble Your Galaxy S21
*To reassemble your Samsung Galaxy S21, follow all the above steps in the reverse order.
*Reconnect all the press connectors.
*Fasten up all the screws with a screwdriver.
Step 24 Attach The Back Cover
*Dip a cotton bud into the isopropyl alcohol.
*Rub this cotton bud around the edges of the phone frame. Wait for a minute to make the old adhesive soft.
*Wipe away the old adhesive around the edges of the phone frame and back cover with a lint-free cloth.
*Now, apply new adhesive glue around the edges of the back cover.
*Attach the back cover to the phone frame.
Bottom Line
Excellent job! You have successfully learned how to replace the cracked or defective screen of your Samsung Galaxy S21 with our step-by-step guidelines. Turn on your Samsung Galaxy S21 and test the performance of the new screen of your S21.
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