Hello guys! I'm new in this forum! and I've decided to start this post because I feel my iPhone 6s is just not working as it should, I got the 16gb version from T-mobile a month ago, as soon as I got it I changed the software from 9.0.1 to 9.2.1 the latest avaliable, I am constantly experiencing some lag and the animations and transitions of IOS are very choppy, I used to have a 5c with 9.2.0 and it was smoother eventhough it is a 3 years old cellphone, I already checked the internals of my 6s and it has the TSMC SoC, it's very frustraiting because is the first time I have the latest and greatest of Apple but it doesn't feel like it! I want to know if other people with the latest IOS version is having the same issues or I just got a faulty phone!