My current phone is an Samsung Galaxy S5 Mini which I've had for close to 4 years now and for the most part has been the perfect phone for me. I'm looking for a replacement mainly because I think it's days are numbered and it's been getting a little slower each day.
Requirements are as follows:
Small size: I'm on my feet for most of the day but still use my phone pretty often and don't want a 6" tablet in my pocket all day, I also want something that can be operated with 1 hand pretty easily while I'm working with the other hand. Bummer that the S5 was the last phone Samsung made a 'mini' variant of. Looking for a screen 5" or smaller.
Fast but not too powerful: My biggest complaint with my S5 mini is opening pretty much any application requires me to wait 8 seconds, and touching anything inside those apps requires me to wait an additional 3 seconds for everything I do. I've heard Samsung's TouchWiz might be the cause but it may just be outdated hardware. Pretty much all I use my phone for is talk, text, email, maps, web, streaming services, calendar, etc and don't do too much multitasking. I'd rather trade some processing power for some more battery life.
1080p or 720p preferably OLED: I love the look of Samsung's OLED screens and would like to keep that for when I'm watching videos on the go, I'd also like to keep the resolution under 1440p because of the longer battery life and at 720p I can't really see the pixels on my smaller screen.
Headphone jack and removable storage: So I guess these are both things that phones are no longer doing for some odd reason
Durable: In the 4 years I've had my S5 Mini I have never used a case with it and have never cracked the screen even though I've dropped it a hundred times. This also goes in hand with the smaller size as a case adds extra bulk.