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The Nokia Lumia 920, developed by Nokia and released in November 2012, utilizes Windows Phone 8 operating system.

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Battery drops from 100% to 7%

I bought this phone from eBay. Turns out it would only turn on unless I charge it for hours! So I bought a new battery and it began charging and turning on. I disconnect it and it would be fine for like 2 or 3 minutes. Then it would all of a sudden drop from 100% to 7%. I don't think its the battery because I bought an OEM battery. But it could be defective. I'm not sure. Any help?

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Does any part of the phone overheat?

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No. Not at all. It works normal then the battery power just drops.

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Sounds like there may be a task left open in the background. Press and hold the back arrow to see if there are any tasks left open? If not try a soft reset first by pressing and holding the vol down+power button. You shouldn't lose any data doing this but some have reported their clock resetting.

Another thing to check. Goto settigs>Applications>photos+camera. Is Auto upload to Skydrive on or off? If it is on, your phone may have apent hours trying to upload to Skydrive if you have a slow internet connection. If connection is slow, you might want to consider turning this off.

If all else you may need to replace the battery.

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Jon Andrade will be eternally grateful.
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