Apple Silicon

[ Show / Hide ] A series iPhone, iPad, Mac (2010–) A4 · A5 · A5X · A6 · A6X · A7 · A8 · A8X · A9 · A9X · A10 · A10X Fusion · A11 Bionic · A12 · A12X · A12Z Bionic · A13 Bionic · A14 Bionic · A15 Bionic · A16 Bionic · A17 Pro · A18 · A18 Pro · A19 · A19 Pro M series Mac, iPad, Vision (2020–) M1 · M1 Pro · M1 Max · M1 Ultra M2 · M2 Pro · M2 Max · M2 Ultra M3 · M3 Pro · M3 Max · M3 Ultra M4 · M4 Pro · M4 Max M5 · M5 Pro · M5 Max S series Watch, HomePod (2014–) S1 · S1P · S2 · S3 · S4 · S5 · S6 · S7 · S8 · S9 · S10 W series AirPods, Beats, Watch (2016–) W1 · W2 · W3 H series AirPods, Beats (2019–) H1 · H2 R series Vision (2023–) R1 U series UWB (2019–) U1 · 2nd-generation UWB chip C series Cellular (2025–) C1 · C1X N series Wi-Fi, Bluetooth, Thread (2025–) N1 T series Intel Mac (2016–2020) T1 · T2 Other 339S0196

The Apple U1 gave Apple devices a sense of where things are. Introduced quietly in the iPhone 11 generation, its ultra-wideband radio measures distance and direction to other U1 devices with centimeter-class precision — the technology behind AirTag's Precision Finding arrow, directional AirDrop, HomePod mini handoff, and UWB car keys.

The U1 shipped a year before it had anything to point at — classic Apple infrastructure-first silicon, waiting for AirTag. Its spatial-awareness layer became a quiet pillar of the ecosystem and was succeeded in 2023 by the second-generation UWB chip with triple the range.