What I need for switching again to an Android smartphone is:
-4,8'' screen or less with high end specs
Galaxy S5 (5"), LG G2, etc
-Apple's customer service quality level
For what exactly? Fix your phone? You need to talk to someone? Do you feel lonely?
-Good build quality and hardware design.
Built quality ≠ aluminum
The sony xperia z3 compact, which is the best IMO, lacks the second an a little bit the third
.........
The galaxy s5 is 5,1 and it's too big as it's the g2. 4,8 is my highest limit. If bezels are smaller, then better. But 4,8 or less
Apple's customer service. Well, they gave me back 150 USD because the shipping of my macbook was delayed 3 days. They sent me a new iPhone for free even before I sent my broken iPhone to them, and by very urgent delivery so 15 hours after my complaint it arrived, having expired the warranty 3 weeks before, an also gave me 2xicloud capacity during 6 months. If I have some problem, it's always the same employee who contacts me until it's fixed. You see, it's quite impossible to beat that.
Build quality is not the same as aluminium, I know that. But I also know, because I owned a S1, S3, S4 and xperia z1, that if it makes plasticish noises when you manipulate it, if the power button falls off, if the voice assistant turns on itself when you plug the usb cable, if... then, it has a poor build quality. And I'm sorry but the iphone feels very solid.
I can assure you I'm the less biased person in the world when it comes to technology. But to each one what it deserves