hello guys, new in this forum, so i bought the iphone 6 in launch day and it was fast and all. so, i read that apple slow the older devices with a new ios, for jailbreak i updated to ios 9,0.2 and surprisingly my iphone 6 is so fast now and more stable than before, really no lag, the back of the phone is not hot anymore, truly im so happy with the new update, my battery last longer, but my question is, should i leave it there till i buy the iPhone 7 or should i update to 9.1 ( will it we as stable and fast as 9.0.2? ) thank you for reading