Finally felt motivated to put my mobile configuration 
I actually downgraded from iOS11. I had lots of issue with iOS11 so unless those issues are fixed, I will be staying on iOS10.If possible stick with iOS 10 as long as possible. I'd advise you to disable telemetry on your iOS because it keeps a local copy of that diagnostic logs on the phone and not removed after sending it to Apple Servers.
How can you downgrade the iOS 11 to 10I actually downgraded from iOS11. I had lots of issue with iOS11 so unless those issues are fixed, I will be staying on iOS10.
I think it is not possible now as Apple has stopped signing iOS10.3.3How can you downgrade the iOS 11 to 10
Hmmm I thought so. iOS 11 isn't an upgrade but a downgrade from iOS 10.x.I think it is not possible now as Apple has stopped signing iOS10.3.3
I regret upgrading to iOS 11 as Apple's Music app constantly keeps crashing if I'm on wi-fi or using mobile data but when I'm offline, it works fine. There are also some other bugs like being unable to make a purchase from App Store if I set the restriction on allowing changes to account. 11.0.3 update didn't fix any of those and hopefully it will be resolved with the next one.If possible stick with iOS 10 as long as possible. I'd advise you to disable telemetry on your iOS because it keeps a local copy of that diagnostic logs on the phone and not removed after sending it to Apple Servers.
I gave it to my mom.I regret upgrading to iOS 11 as Apple's Music app constantly keeps crashing if I'm on wi-fi or using mobile data but when I'm offline, it works fine. There are also some other bugs like being unable to make a purchase from App Store if I set the restriction on allowing changes to account. 11.0.3 update didn't fix any of those and hopefully it will be resolved with the next one.