"Power outage," one said in Hindi. "We’re from the electricity board. Checking for illegal boosters."
Within minutes, the phone began behaving oddly. It would ring with no caller ID, and when he answered, only a burst of static and a low-pitched data chirp. Then a text message arrived from an unknown number: "BI v8.75 active. Link key: 0x9F3A. Awaiting handshake."
The screen flickered, not with the usual white Nokia splash screen, but with a deep amber glow. The text read: