iPhone 8 Plus Battery Replacement

• As a preliminary safety measure, ensure your iPhone's battery has depleted to a level below 25% prior to commencing the repair process.A fully charged lithium-ion batteryposes a significant fire and/or explosion hazard if it sustains accidental physical damage, such as a puncture.
• To prevent electrical shorts and potential damage, completely de-energize the iPhone by powering it down before starting the disassembly procedure.
• Using a 3.5 mm pentalobe screwdriver, carefully unscrew and remove the pair of screws located on the iPhone's lower edge.
• Separating the iPhone's display assembly will irreversibly damage the integrated waterproof barriers; therefore, obtain replacement seals beforehand to maintain water resistance, or exercise extreme caution to prevent liquid ingress during reassembly if new seals are not used.

• To avoid potential harm to your device, ensure the opening pick isn't inserted beyond its intended limit; this procedure details how to mark the pick to ensure safe operation.
• Determine the measurement of3 mmfrom the pick's leading edge and use a permanent marker to create a visible indication on the opening pick.
• For enhanced precision, consider marking the remaining corners of the pick with varying measurements.
• As an alternative method, affix a coin to the pick's shaft,3 mmaway from its tip.

• To minimize additional damage and potential injury when addressing a cracked iPhone screen, secure the fragmented glass with adhesive tape.
• Apply successive layers of transparent packing tape across the iPhone's display surface, ensuring complete coverage of the entire front face.
• Always utilize safety eyewear to safeguard your vision from any dislodged glass fragments that may become airborne during the repair process.
• Should the suction cup prove unable to maintain adhesion during subsequent procedures, create a handle by folding a robust tape, like duct tape, and employ it to elevate the screen.
• As a last resort, you may secure the suction cup to the screen using superglue.

• The following three procedures illustrate the function of the Anti-Clamp, a specialized tool developed to simplify the initial opening process; should you choose not to utilize this tool, proceed past three steps to access an alternative approach.
• Detailed instructions regarding the Anti-Clamp's operation are available in a separate, dedicated guide.
• Grasp theblue handleand move it in a rearward direction to disengage the Anti-Clamp's securing arms.
• Carefully position the arms across either the left or right side of your iPhone’s frame.
• Place the suction cups close to the lower edge of the iPhone, situated directly above the home button—one on the front surface, and one on the rear surface.
• Apply pressure by compressing the cups together to establish a secure suction hold on the intended area.
• Should the iPhone’s surface prove excessively slick, preventing the Anti-Clamp from maintaining a firm grip, applying adhesive tape can create a more textured surface for improved adhesion.

• To engage the locking mechanism, draw theblue handlein a forward direction.
• Rotate thehandlethrough a complete 360-degree rotation, or continue until you observe the cups beginning to expand.
• Confirm that thesuction cupsmaintain their parallel positioning. Should the suction cups exhibit any signs of displacement, a minor adjustment by slightly releasing the suction cups is recommended, followed by repositioning the arms.

• Employ a heating device, such as an iOpener to carefully guide it between the Anti-Clamp’s securing arms.
  Alternative heat sources, including hair dryers, heat guns, or hot plates, are acceptable; however, exercise caution as excessive temperatures may compromise the display or internal battery.
• Position the iOpener flat against the lower edge of the iPhone’s casing.
• Allow a sixty-second interval to permit the adhesive bond to weaken and establish a separation.
• Introduce an opening tool beneath the display surface once the Anti-Clamp has generated a noticeable space.
• Should the Anti-Clamp fail to produce an adequate separation, increase the heat application to the targeted region and rotate the handle by ninety degrees.
  Avoid excessive rotation, limiting adjustments to ninety-degree increments, and observe a sixty-second pause between each rotation to allow the device and time to facilitate the separation.
• Proceed past the following three procedural steps.

The following three procedures detail the process of detaching the display assembly with the aid of a suction cup.
Applying heat to the bottom edge of the iPhone will assist in loosening the adhesive that holds the display in place, thereby simplifying the separation process.
Employ a hairdryer, or alternatively prepare aniOpenerand apply it to the lower edge of the iPhone for approximately 90 seconds to reduce the adhesive's bonding strength.

• Position a vacuum attachmentonto the bottom portion of the display assembly's outer covering, situated directly over the central navigation key.
  Ensure the vacuum attachment's surface remains clear of the central navigation key's area, because contact will obstruct the creation of an airtight bond between the attachment and the glass.

• Apply steady, forceful upward pressure to the suction cup to generate a small separation between the front panel assembly and the rear casing.
• Introduce an opening tool, or a similarly slender prying implement, into the created space, inserting it approximately a few millimeters.
• Due to the robust nature of the waterproof adhesive securing the display, establishing this initial separation requires considerable force; should you encounter difficulty, apply additional heat and gently oscillate the screen in an upward and downward motion to reduce the adhesive's strength until a sufficient gap is achieved for tool insertion.

• Utilizing a specialized tool, carefully maneuver it along the phone's corner and upward along the left side, progressing in the direction of the volume control buttons and the silent switch to disrupt the adhesive securing the display assembly.
• Pause your progress close to the upper left corner of the display surface.

A fragile wiring harness is situated along the right-hand side of your iPhone; avoid inserting any tools in this area to prevent potential harm to thecable.

• To release the adhesive, carefully reposition your tool at the lower-right edge of the iPhone, then maneuver it along the corner and up the right side, sliding it to detach the adhesive.
• Ensure your opening tool does not penetrate beyond 3 mm, to prevent potential harm to the delicate display cable connections.

• Carefully elevate the display's lower border by applying upward force to the suction cup.
• Avoid lifting the display beyond an angle of15 degreesas exceeding this limit could potentially damage or sever the flexible cable assemblies that link the display to the device's internal components.

• To detach the suction cup from the front panel, grasp and exert force on the small protrusion located on its surface.

• Carefully insert a separating tool beneath the display's upper edge, working along the top to release the remaining adhesive bond.

• To release the retaining clips securing the display assembly to the rear case, carefully move the display downwards, shifting it away from the phone's upper border.

Initiate the iPhone's disassembly process by pivoting the display assembly upwards, originating from the left edge, mirroring the action of opening a book's cover.
Refrain from completely disconnecting the display at this stage, because multiple delicate ribbon cables remain attached, linking it to the iPhone's main circuit board.
Secure the display in an upright position using a support to prevent it from obstructing your work area during the repair.

Detach the four screws that hold the lower display cable bracket in place on the logic board.These screws utilize a Phillips (JIS) head.The screws vary in length, as detailed below:

• Two screws measure1.3 mmin length.
• A single screw is1.4 mmlong.
• Additionally, one screw has a length of2.7 mm.During the repair process, meticulously organize all screws to ensure correct placement during reassembly; improper screw placement can result in irreversible hardware failure.

Detach the securing bracket that holds the lower display cable in place.

Employ the tip of a spudgerto carefully lift the battery connector away from its corresponding receptacle on the logic board.
Gently elevate the connector cable a small amount, ensuring it remains disengaged from the socket to avoid unintended power delivery to the device during the repair process.

• Employ the pointed end of a spudger or a fingernail to release the substantial lower display connector, lifting it vertically away from its receptacle.
• When reinstalling connectors, apply pressure to one lateral edge until a secure engagement is heard, then repeat this process on the opposing side; avoid applying pressure to the central portion. Even minor connector misalignment can induce bending, potentially resulting in irreversible component failure.

• Detach the pair of screws utilizing a tri-point Y000 driver, as these fasten the bracket that covers the connector for the front panel sensor assembly.Y000The bracket's retention is achieved with two screws; one measures 1.0 mm in length and the other is 1.2 mm.
  One 1.0 mm screw
  One 1.2 mm screw

• Detach the display unit from the device.

When putting the device back together, halt at this point should you desire to substitute the adhesive securing the display's perimeter.

• To detach the L-shaped bracket positioned adjacent to the Taptic Engine, it is necessary to eliminate the three screws that hold it in place.
  Utilize a 1.3 mm Y000 screwdriver for this task.
  Employ a 2.6 mm Phillips screwdriver for this step.
  A 3.5 mm Phillips screwdriver will also be required.

Detach the bracket from its existing location.

• Employ a prying tool to carefully detach the bonded section of the antenna flex cable.antenna flex cable from the upper surface of the speaker assembly.
• The flex cable is secured with a minimal amount of adhesive.flex cable Should separation prove difficult, utilize a heat source, such as an iOpener or hair dryer, to reduce the adhesive's viscosity, facilitating easier detachment and subsequent reattachment.flex cable This process ensures the safe handling of the flex cable.

• Employing the tip of a spudger, carefully lift and detach the antenna flex cable from its connection on the logic board.antenna flex cable from the logic board.

• Employ the tip of your spudger to carefully lift and detach the opposite end of the antenna flex cable.antenna flex cableThe cable's connection is situated adjacent to the Lightning Port.
• Re-establishing the connection of this cable presents a challenge; to simplify the process, utilize your tweezers to secure the flex cable.flex cableThis stabilization ensures the connector properly aligns with its socket; subsequently, apply gentle downward pressure on the connector's surface with the flat side of your spudger until you hear a distinct click indicating secure engagement.

• Detach theWi-Fi diversity antenna.

• Detachthe Taptic Engine, which is held in place by three fasteners:
  Two screws, each measuring 1.5 mm in length, utilize a Phillips head.
• A single screw, with a 2.4 mm diameter, serves as a standoff.
• Employing a standoff screwdriver or bit is the preferred method for removing standoff screws.
  If a standoff screwdriver isn't available, a small flathead screwdriver can be used; however, exercise heightened care to prevent slippage and potential harm to nearby parts.

Carefully leverage the tip of a spudger to release and detach the Taptic Engine flex cable from its connector.

Detach the Taptic Engine.Carefully extract the Taptic Engine component.

• Within the iPhone 8 Plus, the battery is held in place utilizing four strips of stretch-release adhesive, with two positioned near the top edge and the remaining two located at the bottom.
  A small, black pull-tab extends from the end of every adhesive strip, and these tabs are gently attached to the battery's front surface.

• Carefully separate the initial battery adhesive strip from the battery's lower-right corner.
  Employing fingernails or non-pointed tweezers is the preferred method, exercising caution to avoid puncturing the battery with any pointed implements.

• To ensure successful removal, maintain the flatness and avoid any creases in the adhesive strips throughout this step; distortions can cause them to adhere to themselves and tear instead of releasing smoothly.
  Refrain from applying pressure to the battery while extracting the strips, as concentrated force can create points of adhesion that lead to tearing.
• Extract one battery adhesive tab gradually, directing its movement away from the battery and towards the lower portion of the iPhone’s chassis.
  Apply consistent, even force while pulling, keeping the strip under constant tension until it disengages from the space between the battery and the rear casing. Optimal results are achieved by pulling the strip at the shallowest possible angle, preventing contact with other iPhone components.
• Expect the strip to elongate significantly, extending to several multiples of its initial size; continue the pulling action and reposition your grip closer to the battery as needed.
  Should any of the battery adhesive tabs fracture during removal, utilize your fingers or blunt-tipped tweezers to recover the detached adhesive fragments and resume the pulling process.
  In the event that adhesive strips fragment and remain beneath the battery, making retrieval impossible, proceed with removing the remaining strips and then follow the subsequent instructions.

• To completely detach the battery, perform the previously described procedure for the remaining three adhesive strips.
  Exercise caution when extracting the last strip, maintaining a firm grip on the battery to prevent it from being ejected from the iPhone with force.
  Should all adhesive strips be successfully removed, proceed past the following instruction.
  Should any fragments of adhesive strips remain adhered to the battery and be inaccessible for removal, proceed with the subsequent instructions.

• Should any of the adhesive strips detach and the battery remains adhered to the rear case, dislodge it by carefully introducing a small quantity of isopropyl alcohol, with a concentration of 90% or higher, beneath the battery, specifically near the detached strip(s). Allow approximately one minute for the alcohol to take effect, then gently raise the battery.
  Avoid applying excessive force when attempting to remove the battery. Should further assistance be required, introduce additional drops of alcohol to diminish the adhesive bond. Under no circumstances should you puncture or warp the battery with your prying implement.
• Exercise considerable care when employing prying tools to extract the battery from the iPhone, as doing so carries the risk of damaging the delicate ribbon cables or the wireless charging coil situated directly beneath the battery.
  Apply heat to the iPhone's exterior until the rear case reaches a temperature that is slightly uncomfortable to touch. Prevent overheating, as this could potentially trigger combustion of the battery.
• As an alternative method, utilize a robust string, such as dental floss or a slender length of guitar string, and carefully maneuver it beneath the battery.
  Employ a sawing motion, drawing the string laterally across the entire length of the battery, to sever the adhesive bond. Ensure that the battery remains undamaged throughout this process.
  To safeguard your hands from potential injury, it is recommended to wear protective gloves or secure the string ends around a tool, such as the screwdriver handles depicted in the illustration.

• Disconnect the power source by removing the battery from the iPhone.
  Should your new battery be encased in a plastic covering, carefully slide it off and discard it prior to beginning the installation process.
  To avoid potential problems, ensure any residual cleaning alcohol within the device's interior has been completely eliminated, either by wiping it away gently or permitting it to evaporate naturally.
  To guarantee correct positioning within its designated compartment, briefly reconnect the battery connector to the logic board socket before securing the replacement battery in place.
  Once the battery is affixed, sever the connection and proceed with the remaining steps to fully reassemble your device.
  In the event your replacement battery lacks pre-applied adhesive, consult this guide for instructions on applying fresh adhesive strips.
  Following the completion of reassembly, execute a forced restart; this action can proactively resolve various problems and streamline any subsequent troubleshooting efforts.