I actually run an iPad Mini and an SE due to my hatred of having to carry a large phone everywhere. I don't carry a bag with me... 80% of the time. I was first in line for an SE, I hated the 6 from the day I stupidly decided to buy one rather than another 5S... (water damaged, no phone, need phone now...)
Android...
Heh.
All of my nopes.
I have a perfectly working standard 5 I could put a SIM into, but also... eh, my system works for me, if it ain't broke, don't fix it.
Also what's annoying is iMessage. I use it a lot off my laptop to ping people messages, and as half my contacts are a +61 number and the other half +44 numbers, it doesn't show up who is international and who isn't.
You can't tie two phone numbers to the single account, I have another bog standard 5 sitting in my mums house in Australia permanently on the WiFi, tied to my iCloud account, hoping that people could SMS my Australian phone number and iMessage would divert it to all of my other devices - It worked absolutely perfectly until I added a second phone number (My UK one). It won't let you forward SMS from both phones to the one account, you need to choose one or the other