All iPhone 11 models have the U1 ultra-wideband chip for spatial awareness, whose underlying tech would enable Apple's rumored Tile-like tracking tags (Jon Fingas/Engadget)

Jon Fingas / Engadget:
All iPhone 11 models have the U1 ultra-wideband chip for spatial awareness, whose underlying tech would enable Apple's rumored Tile-like tracking tags  —  Apple introduced the iPhone 11 and iPhone 11 Pro with nary a mention of its rumored tracking tags, but the underlying technology appears to be present and accounted for.