Iphone 4s battery sudden drainage from 38% to 1%

Dear friends,
from today morning my iPhone is suddenly getting switched off at 38% and when i am trying to turn it on it is showing to plug it to the power adapter.
at 1%
now at about 9:50 pm the problem is arising again . pls help

Well, most of what you did is black magic, and has nothing to do with battery drain. But we have no way of knowing how your battery life is below what you think it should be. What are you using it for, what apps do you have, and how much Usage life do you get (settings/general/usage).

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hi LordMothim,
Welcome to the Lenovo Forums.
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More info:
How Lithium-ion Batteries Work
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copied from: iCloud: Remove your device from Find My iPhone

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And what do you want to say us with:
Abhijeet Gupta wrote:
iPhone 4S using 3G in the background,causing huge battery loss.

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Hello,
If you're in a country where there's an apple shop (unfortunately not mine), go check it and ask the employee about it: he's gonna check your Iphone on a "device"
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Believe me you're gonna regret changing your phone to a samsung
Hope i've helped and sorry for my bad english (has english as 3rd language)

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Iphone 4s battery sudden drainage from 38% to 1%

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