Einleitung
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Place phone on a suitable surface. You'll be working on the back, so protect the screen (unless you're replacing it).
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Start by removing the sim card and memory chip holder.
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Now you want to remove the back cover. You can do this by sliding a thin plastic pry round the edges between the cover and the screen. The cover will click off as you work your way round it.
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Don't pull the cover once it's coming free. The "M" symbol (fingerprint scanner) is glued to the cover so if you yank it, it'll snap and you'll break it.
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Once the cover is free, gently heat round the "M" sensor and it will loosen the glue. Lightly press on the M and it will pop off. Once that's happened, you can remove the back cover.
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There are two PCB covers, one at the bottom and one at the top.
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These are held in place with Torx screws and are ridiculously fiddly. Remove all the screws (note that there is a screw below the finger print sensor)
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Once the screws are removed, you should be able to pry the covers off the two PCBs.
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Pry off the fingerprint sensor connector from where it mates to the main board.
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Put the sensor to one side
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There are 3 connectors on the main board. Remove all these
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Battery connector
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Screen connector
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Interboard connector
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Removing the battery is tough. It's glued into the casing and you'll have to lever it out.
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Use something that is reasonably broad to start levering the battery out. It'll probably bend as you do this (it can be flattened again after removal).
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Continue to lever it out. Eventually you'll get through all the glue and the battery will pop out.
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To reassemble your device, follow these instructions in reverse order.
