Same thing has happened to my phone as of 3 days ago. Can get fast charge to work through both the original and seperate chargers. But cannot get hypercharge to work. Says it is, but is actually discharging. Confirmed with Accubattery app. Safe mode does the same thing. Have tried all the ports (including with and without the fan adapter), restarting multiple times, charging whilst on or off. No matter what, the phone displays the 2 lightning bolts and states in setting that hyper is on, but the phone does not charge. Only thing I have not tried is the factory reset option