Apple should have had all their phone with varied versions of OS according to hardware compatibility. I purchased my first iPhone in year 2013, it was iPhone 4s, what a piece of art, it was great but now it is useless (yes useless) because it is not compatible with the new OS. Right now I have iPhone 6s, and I must say it is as good as dead now, but I made my mind to switch to android now. Now the question is how many times we going to buy iPhone?, on an average a serious iPhone lover had spend around at-least $5000+ so far. WTF??? No wonder why Apple became world first trillion dollar company. Good for them, bad for people's pocket.