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Released September 25, 2015. Model A1687/A1634. Repair of this device is similar to previous generations, requiring screwdrivers and prying tools. Available as GSM or CDMA / 16, 64, or 128 GB / Silver, Gold, Space Gray, or Rose Gold options.

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Killing batterys unexpected shutdown at around 50%

Hi I have a iPhone 6s plus that I have had to replace battery around 8 times as the battery works fine for around a month then dies at 50% like its flat pug it in I get 50% than continues till the battery is completely drained replace battery then like new for another month it's be like this since it was stolen from me and I got it back smashed now I'm about to replace the U2 Ic but I want to no if anyone knows of any other chips that can cause this so I can repair

Update (06/29/2018)

Hi again I'm really stuck with this one I have replaced Tigris Ic mosfet ic tristar ic I'm unsure if it's fixed the shutdown issue yet but in addition to that I have released its going through power like nothing one hour YouTube video used about 30% so I looked at big pmic and found caps c2016 c2013 c2017 c2020 c2014 c2015 c2019 and c2021 all to be shorted can anyone help with this issue as I'm sick all I can think of it replace the pmic and no sines of water damage or corrosion gave it a ultrasonic bath

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In addition to replacing the U2 IC, I would recommend inspecting the board under a microscope to look for corrosion or deposits (as a result of water damage) that could be shorting out connections, this would lead to excess battery drain. If there is corrosion/deposits from water damage, the first thing I would recommend is a good cleaning.

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