Power off your iPhone before beginning disassembly.

Remove the two 6.8 mm-long pentalobe P2 screws at the bottom edge of the iPhone.

Measure 3 mm from the tip and mark the opening pick with a permanent marker.

Lay overlapping strips of clear packing tape over the iPhone's screen until the whole face is covered.

If you can't get the suction cup to stick in the next few steps, fold a strong piece of tape (such as duct tape) into a handle and lift the screen with that instead.

Use a hair dryer or a heat gun to heat the bottom edge of the iPhone for 90 seconds or until the screen is slightly too hot to touch.

If you're using a single suction handle, apply it to the bottom edge of the phone, while avoiding the very edge of the glass.

Pull up on the suction cup with firm, constant pressure to create a slight gap between the screen and the frame.

Insert an opening pick into the gap under the screen's plastic bezel.

Use a hair dryer to heat the right edge of the iPhone (the edge with the power button) for 90 seconds or until the screen is slightly too hot to touch.

Slide the opening pick around the bottom right corner of the iPhone to separate its adhesive.

Continue sliding up the right edge of the iPhone until you reach the top right corner.

Leave the pick in the top right corner before continuing.

Use a hair dryer to heat the top edge of the iPhone for 90 seconds or until the screen is slightly too hot to touch.

Slide the opening pick around the top right corner of the iPhone to separate the top adhesive.

Leave the pick in the top left corner before continuing.

Use a hair dryer to heat the left edge of the iPhone for 90 seconds or until the screen is slightly too hot to touch.

Insert a second opening pick in the bottom left corner of the iPhone.

Twist both picks simultaneously until the left edge clips release.

If you haven't removed your suction handle, remove it now.

Rotate your iPhone so the right edge faces you.

Open the iPhone by swinging the display up from the right side, like the front cover of a book.

Lean the display against something to keep it propped up while you're working on the phone.

Use a Phillips screwdriver to remove the three 1.3 mm screws securing the battery and display connector cover.

Remove the cover.

Use a spudger or a clean fingernail to pry the battery connector up from its socket on the logic board.

Bend the connector slightly away from the logic board to prevent it from accidentally making contact with the socket and providing power to the phone during your repair.

Use a spudger or a fingernail to disconnect the display cable connector.

Remove three screws securing the front sensor connector cover:

One 1.7 mm Phillips screw

One 1.3 mm Phillips screw

One 1.8 mm Y000 screw

Swing the cover up from the center of the phone until the small clip by the edge of the phone unhooks.

Remove the cover.

Use a spudger or a fingernail to disconnect the front sensor assembly cable connector.

Remove the screen.

Use a Phillips driver to remove the four 1.7 mm screws securing the loudspeaker.

Remove the loudspeaker from the iPhone.

Each piece of adhesive has a black pull-tab at the end, which is lightly adhered to the edge of the battery.

Use the flat end of a spudger to gently lift up the edge of the top right battery adhesive pull-tab so that you can grab it with a pair of blunt tweezers.

Peel down the battery adhesive pull-tab to un-stick it from the top edge of the battery.

Repeat for the top left battery adhesive pull-tab.

Peel up the two remaining battery adhesive pull-tabs to un-stick them from the bottom edge of the battery.

Grab the bottom right pull-tab with your fingers and slowly pull it away from the battery, toward the bottom of the iPhone.

Pull hard enough to maintain tension on the strip, but don't force it. Give it plenty of time to stretch and un-stick from under the battery.

Don't press down on the battery. Hold the iPhone firmly by its sides.

Keep the strip flat and unwrinkled. Try to pull evenly on the whole strip, rather than pulling mainly in the middle or on one side.

Pull at a low angle so the strip doesn't snag on the edge of the battery.

If the adhesive strip breaks off, try to retrieve it using your fingers or blunt tweezers, and continue pulling—but do not pry under the battery.

Grab the bottom left pull-tab with your fingers and pull it away from the battery, toward the bottom of the iPhone.

Follow the same procedure as with the previous strip: don't press down on the battery, keep the strip flat and unwrinkled, and pull at a low angle.

If the adhesive strip breaks off, try to retrieve it using your fingers or blunt tweezers, and continue pulling—but do not pry under the battery.

Use a pair of blunt tweezers to grab the entire width of the pull-tab.

Wrap the pull-tab and adhesive strip around the tips of the blunt tweezers.

Using the same procedure as before, pull the top right pull-tab to stretch and remove the adhesive strip. Try not to snag the adhesive on anything.

Lightly place two fingers on the center of the battery to prevent it from flinging out while removing the final adhesive strip.

Use a pair of blunt tweezers to pull and stretch the remaining tab to remove the final adhesive strip holding the battery in place.

If you removed all the adhesive strips successfully, skip the next step.

Otherwise, continue with the next step below.

If you're still having trouble removing the battery, apply a few drops of high concentration (90% or higher) isopropyl alcohol under the edge of the battery in the area of the broken adhesive strip(s).

Tilt the phone up so the isopropyl alcohol can flow toward the adhesive strip.

Wait about one minute for the alcohol solution to weaken the adhesive.

Use an opening pick or the flat end of a spudger to gently lift the battery.

Remove the battery from the iPhone.

If there's any alcohol solution remaining in the phone, carefully wipe it off with a coffee filter or allow it to air dry before installing your new battery.