I just bought a second hand 4s for a killer price, 60$ neverlocked 32GB and I want to keep this phone on 7.1.1 and not 8. How is the experience on 7.1.1? Are there any lags? Can this iphone handle all the blur, transparency, fancy animations or live wallpapers? Do apps lag as bad as on the iphone 4? Right now I don't have the iphone so that's why I am asking you. Thanks!