I know this won't be popular, but let's remember everyone has an opinion and my experience doesn't invalidate yours. Just putting this out there in case anybody currently has a 5s and isn't sure if they want to upgrade. I bought a 6s and used it for almost a week. Ultimately I returned it and am sticking with my 5s. Main Reasons for Switching Back The Size. This is the number one reason. I really like the size of my 5s and being able to use it one handed. It feels like I have a much better grip on it and as someone who uses their phone case-less, this is important. The 5s is still a perfectly good phone. Sure, it doesn't have all the latest features, but to me it was hard to justify paying for a new phone just to get things like Apple Pay and 3D touch. These are nice features but not something I can't live without. Things I'm going to miss about the 6s The Camera. I took a few photos/4k Videos on the 6s and loved the camera. It is going to be hard going back to an adequate camera. The Speed/Memory. The 6s is blazing fast and with the extra memory I could really tell a difference. The Size for all things except using it one handed. The bigger screen was definitely nice when sitting on my couch and using the phone with both hands. I pretty much didn't use/need my iPad at all during that time. I know it's unlikely that Apple will bring back the 4 inch screen size, so if I have to eventually upgrade to a bigger screen size, I'm willing to wait until the iPhone 7. It's the old "if you don't need it, wait." I really liked most things about the 6s but it really feels nice to be back using my 5s.