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Originally Posted by R12ax7
Good question on wiping it from a lost phone XsltAnalyst !
FWIW, this press release has one error (at least for the US market). Here, the regular Galaxy S21 lacks the ultra-wideband radio that the S21+/S21 Ultra have, so it will not work. I know other markets use different chips, but I'm not sure if the base S21 has ultra-wideband in those markets.
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Based on the usage description for Digital Key (phone has to be next to the handle of drivers door to open, and placed in the wireless charging compartment to start), this appears to be some form of near-field communications (NFC) rather than ultra-wideband. UWB can work at several feet/meters.