Introduction
Follow this guide to replace a dead or low-capacity battery for the Samsung Galaxy S7 Edge.
Before disassembling your phone, discharge the battery below 25%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured.
If your battery is swollen, take appropriate precautions. Do not heat your phone. If needed, you can use a dropper or syringe to inject isopropyl alcohol (90+%) around the edges of the back cover to weaken the adhesive. Swollen batteries can be very dangerous, so wear eye protection and exercise due caution, or take it to a professional if you're not sure how to proceed.
What you need
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Once the back panel is warm to the touch, apply a suction cup as close to the heated edge of the phone as you can while avoiding the curved edge.
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Lift on the suction cup and insert an opening pick under the rear glass.
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Once you have the pick firmly inserted into the glass, reheat and reapply the iOpener to soften the adhesive.
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Slide the opening pick up along the side of the phone, separating the adhesive.
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Leave the pick in place and grab a second pick as you proceed to the next step. Leaving the pick inserted can help prevent the glue you just separated from re-adhering.
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Repeat the previous heating and cutting procedure for the remaining three sides of the phone.
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Leave an opening pick on each side as you continue to the next to prevent the adhesive from resealing.
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Tool used on this step:Tweezers$4.99
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Use tweezers to peel away any remaining adhesive from the phone's chassis. Then clean the adhesion areas with high concentration isopropyl alcohol (at least 90%) and a lint-free cloth to prep the surface for the new adhesive.
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Peel the adhesive backing off of the new rear glass, carefully line up one edge of the glass against the phone chassis, and firmly press the glass onto the phone.
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Remove the seven 3.5 mm Phillips screws securing the NFC antenna and charging coil assembly.
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Use the small notch on the lower left of the upper antenna to pry it out of the phone.
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Remove the upper antenna.
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Use the small notch on the lower left of the upper antenna to pry it out of the phone.
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Remove the upper antenna.
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Prepare an iOpener and apply it directly to the battery.
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Alternatively, apply some isopropyl alcohol under each corner of the battery and allow it to penetrate for several minutes to help weaken the adhesive.
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Lift the battery out of the case.
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If you are using pre-cut adhesive, follow this guide.
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Remove any remaining adhesive from the phone, and clean the glued areas with isopropyl alcohol and a lint-free cloth.
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Secure the new battery with pre-cut adhesive or double-sided adhesive tape. In order to position it correctly, apply the new adhesive into the phone, not directly onto the battery. The adhesive should go around the perimeter of the battery compartment, but not in the rectangular cutout in the center (which is actually the back side of the display).
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Press the battery firmly into place for 5-10 seconds.
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