Bad idea to have your smartphone as your long hour meetings webcam. Mainly it will drain the battery fast and will make it hot, meaning in long term will shorten its life. This is only recommended in emergency situations, not as your default daily setup.
My phone drained faster than it could charge with a laptop USB C charger and modern phone supporting fast charge. I eventually relented and just got a webcam, but it was a nice idea to have one fewer gadget.
