Not for 6S. It has some issues and Apple still lets users downgrade.
not to mention you can't restore a backup of 11 on 10.x...
is it possible to downgrade to 10.3 ? I thought you can't do that anymore once you upgrade. I upgraded my old iPad to 10 and the experience is horrible. I wanted to downgrade back to iOS 9 but I can't find a way to do it.
I can confirm. Tried the same - wipe and reinstall. Phone is slightly better but still lags for Camera, forwarding images to WhatsApp and to open iMessage.
And this when I have yet to restore from iCloud or restore an entire 25GB Music cache!