Introduction
Use this guide to replace the battery in your Samsung Galaxy A42.
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If the phone is on, power it off by holding the side and volume down buttons, and selecting "Power off".
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Be careful not to overheat the phone, as the plastic backing and internal components can get damaged if they get too hot.
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Apply heat to one side of the phone to soften the adhesive holding the back cover on. Using a plastic pry tool or a pick, separate the back where you applied heat and cut the adhesive, leaving picks where you separate the back.
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Repeat this process on all 4 sides of the back until the back is fully separated.
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Remove the 15 Phillips #000 (1.5mm) screws on the midframe.
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Starting at the 2 notches on both sides of the phone, undo the clips holding the midframe to the phone. Work your way along all sides until the clips are released.
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Using a plastic spudger, disconnect the ribbon cable connecting the motherboard to the daughterboard and screen.
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Using a plastic spudger, disconnect the battery cable from the motherboard.
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Using a plastic spudger, disconnect the 5G wave antenna.
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Be careful not to bend this cable too far if you move it to free the battery underneath.
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Using a few drops of isopropyl alcohol, use a plastic pry tool to start releasing the adhesive under the battery. Add only a little alcohol to start, and work your way underneath, adding only a couple drops to free the adhesive.
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To prevent fire or explosion, be careful not to puncture the battery when removing it, especially if the battery is bloated.
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To reassemble your device, follow these instructions in reverse order.
