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The Samsung Galaxy S II is a smartphone designed, developed, and marketed by Samsung Electronics with Android 2.3 "Gingerbread."

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s2 not charging battery to 100%

S2 battery holder jack inside battery chamber.. Showing open circuit voltage..4.16only..no over heating any where...i hve already replaced usb flex ..bt same problem ...

On charging ..while m running heavy application ..battery goes down

Max battery charge voltage(closed circuit)4.012

Battery charger is ok... Nd delivering 5 volt on mother board

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S2 model is i9100G

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I do believe that if you push these these phones hard enough, you can actually drain the battery even if you have it plugged in and "charging." I know one of my buddies did it downloading and gaming at the same one before. 4.16volts is kinda high for a 3.7 volt battery though. I've seen mine max at roughly 4.02 volts, but that's on a Galaxy S2 Skyrocket.

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