While I’m an iPhone user, I have this Android smartphone with me pretty much at all times because it has features that my iPhone doesn’t have.
The Ulefone Power Armor 18T is a solid Android smartphone that’s water-resistant, dust-resistant, can take hard knocks, and has a built-in FLIR thermal camera.
There’s also the option to add a borescope, turning this into a toolbox you can keep in your pocket.
I’ve tried a lot of ruggedized Android phones, and a few with built-in thermal cameras, but this one is the one I like the best. It’s tough enough to survive heavy use, the thermal camera is so very usable, and the phone has enough premium features to keep me happy.