How to Replace iPhone 8 Battery
In this article, you will learn how to remove a battery from an iPhone battery by disassembling the phone. Removing the battery yourself void your warranty.
The guide will instruct you, how to completely detach the display assembly and intended to prevent accidental damage.
Remove the Pentalobe Screws:
Before, you start the repairing. You must discharge the iPhone battery below 25%. A charged Lithium battery catches fire and explodes it accidentally.
Power off your iPhone before Begin to disassemble
Using the pentalobe screw, remove the 3.5mm on the bottom edge of the iPhone.
Open the iPhone display and compromise the waterproof seals. You must also take care of exposure if you reassemble your iPhone without replacing the seals.
Heat the Display:
Heat the lower edge of the iPhone helps to soften the adhesive and secure the display. It also makes it easy to open.
Use the hairdryer or prepare an iOpener on the lower edge for about 90 seconds in order to soften the adhesive
Separate the Display:
Apply the suction cup on the lower half of the front panel. Located just above the home button.
The suction cup does not overlap the home button. It will prevent the seal from forming between the suction cup and the front glass.
If the display is badly cracked, use tape. It may allow the suction cup to adhere. The tape is used instead of the suction cup
Firmly pull up the suction cup and give a constant pressure to create a slight gap between the front panel and rear case.
Insert an opening Pick into the GAP:
The water-light adhesive holds the display very firmly and creates an initial gap with the light force. If you find it difficult, you can add more heat and gently rock the screen up and down to weaken the adhesive and create a gap to insert a tool.
Slide the opening left edge of the phone and move towards the volume buttons and adhesive, until you create enough gap to insert a tool.
Slide the opening on the left edge of the Phone, start at the lower edge and move towards volume control buttons, break up the adhesive by holding the display in place.
Note: Don’t do it on the left corner of the display.
Don’t pry the top edge of the display eye from the rear case, the plastic clip may break. Reinsert your tool at the lower right corner of the iPhone and slide around the corner to separate the adhesive.
Pull up the Suction Cup:
Gently pull up the suction cup at the bottom edge of the display. Pull the small nub on the suction cup to remove the front panel.
Slide by using the opening pick underneath the display around the top left corner and top edge of the phone to loosen the adhesive.
Slide the display assembly to the top edge of the phone to disengage the clips that hold the rear case.
Open the iPhone by swinging the display from the left side like the back cover of the book. Don’t try to fully separate the display. There are several fragile ribbon cables connected to the iPhone logic board.
Disconnect the Battery:
Must secure lower display cable Bracket by removing the Screw of the following lengths? Two 1.3 mm screws
Two 2.8 mm screws
Carefully track the screws, When you reassemble, install the screw in the wrong place cause permanent damage
Carefully remove the Bracket
Use the point or a spudger to remove the battery
The point of spudger can be used to pry the battery connectors, out of the socket in the logic board.
Slightly bend the battery connector cable and prevent making contact with the Socket and provide power to the phone during the repair.
Disconnect the Display and digitizer:
Point of spudger used to pry the lower display and connector out of its socket.
Press down at one side, until it clicks to the place and repeat the process on the other side too. Don’t press on the middle, otherwise, the connector is slightly misaligned and cause permanent damage
Disconnect the second lower Display cable:
Use the point of spudger to disconnect the second lower display cable.
Remove the Bracket:
Remove the three 1.3 mm Phillips screws securing the bracket over the front panel sensor assembly connector.
Remove the bracket.
Use the point of a spudger to disconnect the front panel sensor assembly connector.
Remove the Display Assembly
Remove the display assembly.
During reassembly, pause here if you wish to replace the adhesive around the edges of the display.
Remove the Wi-Fi diversity antenna
Remove the three screws securing the bracket next to the Taptic Engine:
One 1.3 mm screw
One 2.7 mm screw
One 2.9 mm screw
Gently slide an opening pick between the antennas flex cable and the top of the speaker.
This portion of the flex cable is lightly adhered in place. If necessary, apply a little heat from an iOpener or hair dryer to soften the adhesive. This will make it easier to separate the flex cable safely.
Use the point of a spudger to pry up and disconnect the diversity antenna flex cable from the logic board.
Slide an opening pick under the antenna flex cable to hold the socket down.
Use the point of your spudger to pry up and disconnect the antenna flex cable from its socket, using the opening pick to hold the socket down.
Reconnecting this cable can be tricky. Make it easier by using your tweezers to hold the flex cable so the connector aligns with its socket. Then, gently press straight down on the connector with the flat of your spudger until it clicks into place.
Remove the Taptic Engine
Remove the two screws securing the Taptic Engine:
One 2.1 mm Phillips screw
One 2.1 mm standoff screw
Standoff screws are best removed using a screwdriver or bit.
Use the point of your spudger to pry the antenna cable socket up and away from the connector below it
Use the point of your spudger to pry up and disconnect the Taptic Engine flex cable.
Remove the battery adhesive
The iPhone's battery is secured by four pieces of stretch-release adhesive—two at the top, and two at the bottom.
Each piece of adhesive has a black pull-tab at the end, which is lightly adhered to the front surface of the battery.
Peel off the battery adhesive:
Peel off the first battery adhesive tab from the bottom right of the edge. Use your thumbnails or blunt tweezers. Doing carefully not to poke the battery with using sharp tools.
Slowly pull one battery adhesive away from the battery, towards the bottom of the iPhone. Pull the strip without pulling and not damage not others iPhone components.
The strip will stretch too many times to the original length. You can use your fingers or blunt tweezers to retrieve the remaining length of the adhesive.
Remove all the adhesive strips
Flip the iPhone back over and thread a strong piece of string (dental floss) underneath the battery.