Jin Daily Tech Trivia: iPhone’s New Fast Charging – USB PD 3.2 AVS

With a bigger battery and new motherboard design, Apple finally upgraded iPhone fast charging (last updated in 2017) from standard USB-PD to the latest USB-PD 3.2 AVS.

Apple actually debuted AVS in 2021 with the 140W MacBook Pro charger, but now it’s coming to iPhone.

Why AVS instead of PPS (the Android favorite)? • PPS: Ultra-precise (20mV steps) but comes with baggage. It fixes the current output, usually capped at ~2.xA. That means if a phone needs higher current, PPS throttles total power and slows charging. Add to that Android’s jungle of proprietary fast-charging standards, and PPS support becomes messy, inconsistent, and often limited. • AVS: Simpler (100mV steps), cheaper, and more flexible since it doesn’t lock the current. The real win? It shifts most of the heat from the iPhone into the charger, keeping your phone cooler and the battery healthier.

And here’s the kicker: AVS is likely to become the new standard. Why? Because PPS’s supposed advantage—fine current control—is mostly theoretical. In the real world, cheap cables and chargers ruin that precision anyway. So you end up paying more for complexity that doesn’t deliver real benefits.

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