New battery causing phone to be slow under 10%
So I recently decided to put a new battery in my IPhone 6s Plus as the old one wasn’t holding charge. I ordered a battery from another source and installed it. However, when my phone would get below 10% battery remaining, it would become very slow. As soon as I would plug it in it would work like normal. I figured this would be from a inferior battery, so I ordered one from iFixit. However, the new battery does the exact same thing. Does anyone know why I’m experiencing this and how to fix it?