yes it's there since long
Alternative is login to the account of Amazon or one plus and check your order history
From where did you purchased it like Amazon or One plus store. Then try remembering the month you purchased. search for an email in your mailbox
Yes it's perfect.
Try factory reset and take a back up before that.
Did you cleared the cache and then factory reset and then installed the Oreo update. Or just updated the OTA which came?
How much slow? can you provide details pls?
It will work. just search for the exact steps in the forum to avoid any further issues.
Thanks for creating a new thread for the issue already reported by other forum members.
If you like taking risks go for Oreo. If you don't like taking risks stay on N.
Go to service center.
I Know how to use the search function of the forum so I don't need to be awake.
Tomorrow morning 2AM. Be ready to download it @2 else it will disappear.