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Does your phone run out of juice faster? Does your phone require you to charge it more often? Replacing the battery may solve these problems.
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Use the small suction cup to lift the back panel:
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Press the small suction cup on to the middle of the back panel.
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While holding the Sony Xperia Z ultra down with your left hand, slightly pull the small suction cup upwards to create a small opening between the back panel and the front panel.
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While continuing to pull the small suction cup upwards, insert the spudger in the small opening.
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Pry the front panel downwards with the spudger while continuing to pull the small suction cup upwards.
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Remove the back panel by pulling the small suction cup upwards.
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Remove the following six screws with a Phillips #000 screwdriver:
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five silver 2.1 mm screws
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one gold 3.1 mm screw
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Pry the plastic motherboard shield open by placing the spudger under the shield and running it along the edges.
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Remove the motherboard shield by lifting the lower end upwards first.
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Detach the battery connection cable by prying it upward with the spudger.
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Pry the upper end of the antenna upwards with the spudger.
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Detach the antenna by pulling the upper end upwards and outwards.
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Insert the spudger underneath the battery and run it back and forth to remove any adhesive.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Does this fix change the waterproof efficiency?
Hello atilasilva,
I guess so. Since you have to either replace the complete back cover or at least the glue line around the back cover I think the phone will not be completely waterproof again. It still may be solid splash proof.
Battery available for $14.99 on eBay http://www.ebay.com/itm/112267192605
Thanks a lot. This instruction really helped me to replace the battery!
I am about to follow your procedures to do a battery replacement. I have read your instructions, one question is if any need to use some glues to fix the back panel of the Sony Phone? From your instruction you did not mention the use of any glue at all, I am a bit concerned because at the moment my Sony phone both front and back panes are already loosen. I was told this is due to the old battery expanding.
Thanks for your help