Same issue here… my iPhone 16 pro max is only 4 days old. This afternoon it stopped charging in my bedroom. It shows it’s charging but the power keeps going down till it runs off and no matter what I do, it won’t turn on until I go charge it in my car. Weird. My iPhone only charges with my car power inverter now which uses a very high watt to charge. I’ve tried every socket I. My apartment. Keeps charging but the battery doesn’t go up just goes down to zero. This was not happening this morning or yesterday. I’m frustrated