The updates are slower and this is what I said even in my post.
Maybe we define inefficiency in different ways. How is Android inefficient? iOS is in terms of RAM management. My 4GB 3 years old Android phone reloads less tabs and apps than my iPP with 4 GB RAM. iOS and efficient RAM management is a contradiction. I have lost data due to "RAM management" in iOS. It's that bad. And Apple refusing to put more RAM in their devices make it worse.
And yet Android devices battery life is far better than iOS. I am sorry but my Sony phone with 2600 mAh offers me 5 days battery life. There is no iPhone that can offer me that. Yes, Android phones offer more RAM and have bigger batteries and this is why they are more efficient.
It is buggy. I wait 2-3 months to install a newly released major iOS version. I rely on my company iOS testing before installing new major iOS version. Apple has notorious talent to break basic things in iOS like messages, mail, RAM management, synching between devices with the same Apple ID, not saving files properly when downloading from browser. Currently I have issues with even the Camera app - cannot handle well taking photos around sunset time. It does not calculate exposure properly, I have to do it manually every time and even then I end up with streaks of colors in the sky instead of smooth color shading.
Last week I had to restart the phone because iOS does not kill apps properly and a certain app was rogue. So no biggie, I restarted the phone and then using it in landscape was broken as it would show me the today view. So I had to restart it again. So I lost 5 minutes to deal with it because iOS does not know how to kill rogue apps properly. Every major iOS version introduces worse RAM management and increased apps and tabs reloads. Then Apple takes 3-4 months to fix it with patches and with the new version is the same. It is like deja vu. Every version.