By Sam Lionheart • Difficulty: Difficult
Is your battery running out way too fast? Are you forced to recharge your S7 more than once a day? This guide will show you how to remove the tired old battery in your S7 and replace it with a new one.
Note that the video guide recommends removing the SIM card. This is not necessary, but won't negatively affect repair if you do remove it.
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, 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.
- Apply a heated iOpener to a long edge of the phone for about two minutes.
- When 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.
- Lift on the suction cup and insert an opening pick under the rear glass.
- Once you have the pick firmly inserted into the glass, reheat and reapply the iOpener to soften the adhesive.
- Slide the opening pick down along the side of the phone, separating the adhesive.
- 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.
- Repeat the previous heating and cutting procedure for the remaining three sides of the phone.
- Leave an opening pick in each edge of the phone as you continue to the next to prevent the adhesive from resealing.
- Lift the glass and remove it from the phone.
- First use tweezers to peel away any remaining adhesive from both the back cover and the phone's chassis.
- Then, clean the adhesion areas with high concentration isopropyl alcohol (at least 90%) and a lint-free cloth. Swipe in one direction only, not back and forth. This will help prep the surface for the new adhesive.
- Be sure to turn on your phone and test your repair before installing new adhesive and resealing the phone.
- After installing the rear cover, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond, such as by placing it under a stack of heavy books.
- Remove the twelve 3.5mm Phillips screws.
- Insert the tip of a spudger into the small notch on the left side of the antenna assembly, and pry the assembly up and out of the frame.
- Remove the antenna assembly.
- Use the flat end of a spudger to lift the charging coil assembly out of the phone.
- Use the flat end of a spudger to pry up and remove the loudspeaker assembly.
- Use the flat end of a spudger to disconnect the battery connector.
- Prepare an iOpener and apply it directly to the battery.
- Apply the iOpener for at least a minute to soften the battery adhesive.
- Alternatively, apply some isopropyl alcohol under each corner of the battery and allow it to penetrate for several minutes to help weaken the adhesive.
- Use an opening pick to pry up the battery from the bottom.
- Slide an opening pick up the side of the battery to break apart any remaining adhesive.
- Lift the battery out of the case.
- Remove any remaining adhesive from the phone, and clean the glued areas with isopropyl alcohol and a lint-free cloth.
- 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).
- Press the battery firmly into place for 5-10 seconds.
To reassemble your device, apply adhesive to the back glass and follow these instructions in reverse order.