You call ConnectivityManager.requestNetwork() and boom - Wi-Fi connects. Feels like magic. But somewhere deep in the OS, daemons are dancing, HALs are handshaking, and the Wi-Fi stack is sweating bullets to make it happen. This talk is for anyone who’s ever thought: "Wait… how did that actually work?" We’ll trace the full journey - from the moment you call the WifiManager APIs to the instant your phone says "Connected." Along the way, we’ll break down what’s happening under the hood: who talks to whom, what parts of the system are involved, and how Android makes Wi-Fi feel effortless. If you’ve ever been curious about how Wi-Fi really works beneath the surface, this deep dive is for you.