With the current res. You don’t see any pixels. With a higher res. Display, CPU and GPU have more to do so worse performance and worse battery life. The only thing a QHD makes sense on a phone is if you use it for VR, but then you could also go for iPhone 6s Plus which has at least 1080p FHD.
Maybe AMOLED comes in the iPhone 7 or 7s/8(however you want to call it). But the screen of it is still very good for a LCD.
It’s your fault when you buy a 16GB model, I mean who buys something in 2016?
If you bought one with more space, you wouldn’t need micro SD
Man you bought a 10 months old phone. Phone cameras are evolving very fast so of course you can’t compare it with a newer flagship.
You can disable live photo if you don’t like it.
I can’t say if Siri is slow, I don’t use her
Processor and GPU are not outdated for example.