I've had my 6s Plus for 3 weeks now, and the battery life is very poor. When I first got it, I did notice a little bit of a battery drain, but I was told on another forum that it's normal for this to happen and to wait for a couple of days. I've waited for 3 weeks now, and the battery life has gotten worse. When I first got it, I would get 4-5 hours on full charge, but now I only get 2-3. I would consider myself a moderate but sometimes heavy user. I have the Samsung chip if that makes a difference. I was wondering if I sent it to Apple, would they still repair it for replace it. And if they replaced it, could I get a TSMC chip. Thank you in advance.