I just do not see the purpose for these speeds for today's extremely handcuffed dumbphones.
TRUE 4K (55mb/s+ bitrate) with TRUE Dolby Vision (p7) support? Nope!
TRUE 4K gaming with ray-tracing enabled? Nope!
Continuous 4K/60 video recording? NoOOoo!
Massive of 100s of GiB transfers often from a phone? Heck NO!
Creative work? Well, not to the extent that these speeds would matter.
Useless storage speed for current and near future phones for just another stupid reason to jack-up prices for something that's not even practical for today or tomorrow.
When phones become really smart and the majority of users has finally throw away very intrusive/spying, no TRUE file system, etc. Google/Android, we can record in 4K longer than 10-minutes or so before the phone burn-up, and when phones can play CP2077, etc. (with ease w/path-tracing enabled at least at 1080p) then the TRUE smartphones could use these speeds(+) here.
Until then (years out it seems, intentionally) this is just gibberish marketing.