I have 2 Hexbright flashlights. They’re programmable so you can make it work however you want. Really wish the company went beyond the kickstarter because I’d love some different models with the same customization.
I have mine programmed where from off hold=as low as possible. Then standardish 3 brightness, starts at low first click. Hold button while on for turbo. But my favorite part is if you don’t click the button for 5 seconds, the next click is off instead of the next brightness. Saves your night vision not having to cycle through high to turn off.
I mean for that, my phone works fine. I set the bixby button to turn on\off the flashlight. Single button on off always on me. Of course being programmable, you could program a simple on off as well on the hex.
I used the hexbright camping and stargazing. The hold setting is so dim its useless unless you’re in pitch black and just need to see the star chart. And you don’t want bright as it takes at least 30 minutes to recover your night vision after a bright flash so that’s what my use case was.