I am curious where the hell did this indexing rumor come from? If you upgrade to a newer IOS version, is the dam OS not already indexed from the past indexing if such a thing exists in IOS?
If you do a fresh install or buy a new device like for example the mini 4 and set it up as new device and redo everything from scratch, what the hell would the OS index besides cache the files that were already installed and cached and indexed when they flashed it to the device at the factory?
Its not indexing every-time you turn the thing on and do a reboot, and right at the beginning is when IOS9 crap lags and hitches until its all loaded under ram then it smooths out! (kind of like Android, hmm makes you think)
When you reboot any device with older hardware and IOS8 it doesn't lag or hitch at all even at the beginning when you first see the lock-screen and or unlock, and then still its butter smooth for everything without touch delays, app delays and apps taking longer to load on IOS9 in general compared to IOS8 which they over time were optimized for!
Seriously, did an APPLE engineer verified and certified state officially IOS9 is slow or lags and the excuse is just because temporarily the OS is "doing this magical indexing thing" and whenever its done whether in minutes, hours, days, months or years; IOS9 will be so much better and faster than IOS8 with even more added features a lot of us did not need?
I do not get it, because however you installed IOS8, upgraded, or bought a new device, if it was doing this "magical indexing process", the device (on IOS8) did not act up and slow down to a crawl, so if this thing is true, why would IOS9 act up and slow down to a crawl?
Some of the BS people come up with as an excuse for why IOS9 does not work like IOS8 is unbelievable!
Not pointing fingers, just generalizing and conveying my thoughts on this subject!