Samsung Galaxy A8 LCD assembly replacement

• use a hairdryer or a heat gun to warm up the rare cover of the phone
• use a thin plastic card or a triangle pick to create a small gap in the edge

 As this is a water-resistant smartphone, the adhesive under the rare cover is very strong. If you are unable to create a small gap, use an even thinner plastic tool or continue warming up the cover for a few more seconds.

 be patient, this step can take even 15 minutes.

• The fingerprint sensor is located on the rare cover. The location through which the flex cable leads is marked in the photo. Advance with care when separating with a plastic card.
• After opening the rare cover, disconnect the fingerprint sensor flex cable – this cable is short and fragile, therefore be careful, not to damage it. 
   

• Remove all the 15 Philips #000 screws from the motherboard bracket 
• Gently pry up the bracket with a plastic spudger
• Disconnect the battery flex cable. The flex cable clamp is fragile, therefore handle with care and touch it only with the flat end of a spudger.
   

• Disconnect the flex cable from the screen by using a spudger 
• Use a spudger to remove the front-facing camera
• Turn the device and warm up the display in the place of the front-facing camera. 
• Use a spudger to create a small gap and insert the ultrathin plastic opening card in
• Cut the adhesive under the display with the opening card. Every time it seems difficult, warm up repeatedly. 

 First, test the new display

• Connect the flex cable to the display 
• Turn on the smartphone and check: 
  • Display brightness – pull it down to the minimum and then maximum 
  • Touchscreen –  by moving one of the apps around the screen or editing a text message, you can check if everything works smoothly
  • Take a look at a black and white photo – to check the pixels
  • After testing, turn off the phone and disconnect the flex cable 

 You have to turn off the device first, before disconnecting the flex cable. If you do this in a reversed order, you will damage the screen. 

 Installing a new display

• Remove the remaining adhesive, left around the frame from the old screen. Use an antistatic cloth and isopropyl-alcohol
• Apply the special adhesive sticker on the rare cover of this device and secure back to the body of the phone. 

• Remove the back cover of the fingerprint reader and connect the cable to the motherboard.
• Clean the old adhesive residue on the back cover. Use an antistatic cloth and isopropyl alcohol.
• Attach a special adhesive sticker to the back cover for this device on the back cover and attach the cover to the phone body.