Comment by shagie

They have to buy the chips (and integrate them) from a vendor like https://www.st.com/en/wireless-connectivity/ultra-wideband-p... or https://www.nxp.com/applications/enabling-technologies/conne...

It isn't something that any device can do by default. For example, Samsung integrated it into their Smart Tags ( https://www.androidpolice.com/samsung-smarttag-2-uwb/ )