(Question) Using phone to debug

So I’m working on a mobile game and I installed the SDK files for Android development. When I select to launch the game it says there are no devices connected. But the reason why is because my computer won’t find my phone. I have followed the step by step in the Unreal Android quick start page in documentation. But still nothing. Does this work with only certain phones? Do I need to activate the developer option on my computer? Any info would help.

make sure you have enabled the USB debugging from the Developer options

I did. And unreal located my phone once yesterday and now it won’t locate it.