I had endless issues with my launch day iPhone 6s Plus. It had the TSMC chip. Battery life was amazing. Now...my new phone has the Samsung chip and I'm getting 5-6 hours of usage...used to get 8-9. I switched to the plus for the battery life but this is back to how my 6 was. Do you think that warrants another replacement. I was hoping the chip wouldn't seem that different. Same apps are installed on both phones.