At PC Magazine, Sascha Segan has compared LTE speeds of the iPhone X to XS, and the latter is substantially faster. “The new iPhone XS and XS Max use an LTE modem that we’ve never seen used anywhere else: the Intel XMM7560. The 7560 is Intel’s first modem to support all four US wireless carriers, letting Apple drop Qualcomm, the world’s dominant high-end modem supplier.” However, ” … it still doesn’t quite match the Qualcomm X20 modem used in the Samsung Galaxy Note 9.” This is good stuff.
Check It Out: iPhone XS Tests Far Better Than iPhone X in LTE Speeds