Hello, I would like to warn anyone who is thinking of getting their battery replace. I got my moms iPhone 6S battery replace early this year. Now 11 months later the phone needs to have the battery replace again. She was having issues with her phone not maintaining a charge and the phone would shut off at 20%. I notice the battery maximum capacity was 94% I called Apple support and they ran a diagnostics and they told me that the battery was faulty and needed to be replace so they scheduled an appointment to get the service done. So I gave them the phone on Saturday and picked it up Sunday. They told me that they replaced the battery and passed all the testing. When I got home I noticed the battery maximum capacity was still at 94% and the phone kept shutting off at 20%. So I download coconut battery on my Mac and connected the iPhone to the Mac and it showed me the iPhone battery had 243 battery cycles. So they didn’t change the battery and they charged me $30.