Introduction
This guide walks you through the process of replacing a worn out battery in a Nokia 3.1 smartphone. The process is quite straight forward. You only need some patience while removing the back cover as it might be hard to open it up at first.
You will need a model HE336 battery replacement.
What you need
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Try to use a thin tool like a razor blade to start to pry open the back cover.
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When you opened it up just a little bit put a plastic card or a plastic opening tool inside the gap.
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Using the plastic tool slowly make your way around the back cover. You can also use a guitar pick or similar.
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Hint: the back cover is attached to the body with several plastic noses as well as a thin strip of adhesive. The cover is quite flexible and sturdy.
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Remove the seven Torx T5 screws from the logic board cover.
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Remove the logic board cover.
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Lift up the battery connector from the logic board.
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At the bottom end of the battery you will see two black ends of adhesive strips showing up from underneath the battery.
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Slowly pull at those adhesive strip ends to be able to lift out the battery.
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To reassemble your device, follow these instructions in reverse order. Also don’t forget some double-faced adhesive tape to fixate the new battery.
To reassemble your device, follow these instructions in reverse order. Also don’t forget some double-faced adhesive tape to fixate the new battery.
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