Aporte original por: Minho ,
You could have a defective battery, the 6S series of phones is well known to suffer from poor batteries (although mostly the 6S, not the 6S Plus). That would certainly be an easy thing to try as the gas gauge on the battery may be sending a faulty signal to the CPU. However, given all of the genuine/non-genuine charging cable issues, I would also suspect a problem with the charging IC. Non-genuine Lightning cables do not have the communications chip inside that Apple uses. Additionally, non-genuine charging bricks are also not "protected" against power surges. Most people think that the protection circuitry is on the phone but in reality is in the charging devices. So it is possible that your charging circuit was damaged by poor quality cables and bricks. Does iTunes recognize your phone? If you have a defective charge circuit, this will require a micro-soldering repair and is not DIY.