When to replace stock battery?
Is there any kind of app that can determine if the stock battery has lost it ability to hold a charge? I have several spare stock batteries that either came with the phone or were purchased separately. I am experiencing an issue where battery goes from a high level (more than 50%) to less than (less than 10%) after a reboot. All the batteries look the same, so I am not sure if the issue is with one battery or all. My charge port is broken and I have to charge via an external charger. Thank you in advance.
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