V-edge: Fast Self-constructive Power Modeling of Smartphones Based on Battery Voltage
summary
Claims that battery output voltage edge events linearly map to instantaneous current changes and uses that to build phone power models from voltage readings alone. Produces component and per‑app models (CPU, screen, Wi‑Fi, GPS) without external meters or current sensors, runs full training on a Nexus in ~1.2 hours versus ~100+ hours for SoD methods, detects ~4% CPU changes, and achieves errors close to external metering (roughly single‑digit percent).
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