Battery Replacement of iPhone 11 Pro

Before starting, it is necessary to discharge the iPhone below 25% because a charged Li-ion battery can ignite or explode if accidentally cut.

• Turn off iPhone
• Unscrew the two 6.7mm long pentalob screws on the bottom edge of the iPhone using a Pentalobe screwdriver (Ph0001.2)

Opening iPhone will break its waterproof seal, so have a replacement seal ready before beginning this step.  Without a new seal, your iPhone will not be waterproof.

Warming the bottom edge of iPhone helps soften the screen protector and make it easier to open.

• Using a hair dryer or heat gun, heat the bottom edge of iPhone for about 3 minutes to reach about 80 ° C.
• Do not put iPhone in the microwave !!!

• Place the suction cups near the bottom edge of iPhone, one at the front and the other at the back, and gently push it into place.
• Hold your iPhone securely and use gentle suction cups to separate the screen from the back of the phone.
• After separating the display approx. 3 mm from the back, insert the Fixservis card into the gap.

The glue that holds the display in place is very strong, thus creating this initial gap requires considerable force.  If you have difficulty, reheat the bottom edge and gently slide the screen up and down repeatedly to weaken the glue until you create a gap to insert the Fixservis card.

• After successfully releasing the glue from the edges, remove the suction cups.
• Open iPhone by turning the display to the left like a book.
• We recommend that you support the display so that you do not tear off the flat cable that holds the display from the system board.

For now, don't try to completely detach the display, as a few fragile flat cables still connect it to the iPhone's motherboard.

• Remove the two 1.3 mm long screws using a Pentalobe screwdriver securing the battery cover bracket and remove at the same time.

Throughout the repair, follow each screw to make sure it returns exactly where it came from to avoid damaging your iPhone.

• Use the tip of the Spudger to disconnect the battery connector on the system board from the system board.

Try not to damage the black silicone seal surrounding this and other board connections.  These seals provide exceptional protection against the ingress of water and dust.

• Bend the connector slightly away from the system board to prevent accidental contact with the outlet and power to the phone during repair.

• Using a Pentalobe screwdriver, unscrew the six 1.3 mm screws securing the logic board cover bracket, and then remove it.

• Disconnect the OLED panel cable connector, front sensor, and digitizer using the Spudger.

• Remove the display from the system board.

• Using a Pagoda screwdriver, unscrew the four 1.5 mm screws securing the bottom cover of the battery connector and remove it at the same time.

• Use the Spudger to disconnect the lower battery cable.

• Use the Spudger to disconnect the Taptic Engine
• Use a Pentalobe screwdriver to remove the three screws holding the Motor Taptic:

- 1st screw 1.9 mm long.

- 2nd screw 1.4 mm long.

- 3rd screw 4.1 mm long.

• Then remove the Taptic Engine.

Throughout the repair, follow each screw to make sure it returns exactly where it came from to avoid damaging your iPhone.

• Using a Pentalobe screwdriver, unscrew the two 1.4 mm screws securing the Lightning flex cable holder and then remove it.

• Use the Spudger to disconnect both connectors on the Lightning flex cable from the system board.
• Gently lift the lightning flex cable and bend it slightly toward the bottom edge of the iPhone to gain better access to the battery below.

• The battery is attached to the back case with three pieces of adhesive clips - one near the bottom edge of the battery, the other at the top and the third on the right.
• Each gluten has one or two black pull-out tabs at the end that are slightly glued to the side edges of the battery.
• Grasp the tabs at the same time and slowly pull the adhesive away from the battery.
• Repeat this process from all three sides.

• Remove the battery using the Spudger.

• Peel off the blue plastic sheet from the new set of adhesive tapes and discard.
• Carefully place the adhesive tapes on the battery and stick them in place as shown.
• Use your fingers or a cloth to firmly press the strips into place on the battery.
• Press the center to attach the black control label to the battery as well.

• Carefully insert the battery into the iPhone.
• Make sure the battery connector is in line with the system board.

• Remove the old glue along the edges of the iPhone.

• Stick new gluten under the LCD Adhesive.
• Reconnect the battery.

The new adhesive will ensure the iPhone's resistance to water and dust.

• When it comes to reinstalling, follow these instructions in reverse order.