One spec Apple didn't improve in iPhone 6S: Battery life - CNET
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My old iphone 6S battery exploded while just laying in a drawer : r/mildlyinteresting
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iPhone 6s/6s Plus: Fix Battery Draining Too Fast iOS 15 - YouTube
iPhone 6s/6s Plus: Fix Battery Draining Too Fast iOS 15 - YouTube
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Solutions for Top Most Common iPhone 6/6S Battery Problems
