I can’t believe people are still paranoid about this supposedly planned obsolence from Apple.
New software on a 2+ year old phone is not going to run the same as the new phone, is pretty simple. OS get complex and more resource demanding, new features, animations, apps are much heavier. Still, the A8X and A9 SoC handle iOS 11 very very well, and I’m sure that by iOS 11.3 they will run the same as 10.3
Get over with it, in the tech world you can’t expect your 3 years old phone to be as fast as the new iPhone 8, thats delusional, stop the obsolescense bull ****.
Also iOS 11 as NEW OS. Devs need to optimize and update their apps, they have been updating and optimazing for iOS 10 for a year, give iOS 11 some time.
I don’t know if you guys remember iOS 10 at the beginning, it also worked pretty bad compared to 10.3.3