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Repair information and guides for the iPhone 6S released by Apple on September 25, 2015. Models: A1688, A1633

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in application 3uTools etc my battery OKAY but still got this problem

i have many problem here , 23 June i buy second iphone online the condition so good , but i got problem when battery turn into 20% and opening big app (antutu, pubg, facetime, telegram) it always retart (but when i charge thats couldnt happen), then when battery down in 10% my phone getting slower and lag . many my friend say this because my battery and then they give me recomend to using 3utools for check my battery but after i check everything about my battery thats clean and not on problem . but my battery in data connection just 4 hour to turn in 20%.what do you think guys ?? this about battery , U2 ic or my iOs 11.4 ? please HELP :(

Answer this question I have this problem too

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I would suggest swapping the battery first. Regardless of what 3utools says, this is exactly the behavior of a bad battery.

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3 Comments:

if i gaming in 19% or lower but in charging condition my phone not restarting

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That sounds right. Usually phones dont restart when being charged unless what they are doing is using the battery at a higher rate than it's charging. I would swap the battery. It's not too hard to do and I think itll fix your issue.

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thanks dude, i will try it

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iil_humm_13 will be eternally grateful.
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