They've been the only ones that don't just turn off in really cold temperatures, even without babying them in warm pockets.
The general ruggedness is also pretty good to amazing, depending on how fragile your previous phones were. For example: it survived a ~10 meter (32ft) drop on rocks, whereas everyone was convinced it was done for.
To be honest I first thought it would be a gimmick, but being able to see heat / rough temperature degrees has proven itself quite useful.
But you don't really realize it until you have it available. It's kind of like having another sense available to you.
Random examples of where it was useful:
- finding shitty chargers/electronics which were really hot while doing nothing -> wasted power
- spotting a water leak before it was visible (think cold spot in the middle of the ceiling)
- checking car tire alignment (one side hotter than the other)
- finding buried hot water pipes
- finding where cold air is leaking in during winter
- spotting damp areas
and probably others that I'm forgetting right now
Once I was stuck with a ridesharing car opened and off in -20C because my old samsung s8 throttled so bad I couldn't even reboot it. It was completely unresponive with the flashlight still on discharging it even faster.
I couldn't leave the car too, being responsible for damages during the rent.
After a bit of time I remembered that to force shut down newer androids you have to hold volume down and power. Why would they not keep it as a long press is beyond me.
I had that in my hometown in eastern France at 800m altitude, a town a few km away has a record of -41. -15/-20c was almost a yearly occurance when I was a kid