new Google sim card with current use number on iPhone

Should the SIM card actually be from a neutral internet

service provider; really shouldn't be an issue with that.

Then again, you say "Google" & if that's true, I'm not sure!😇

And that would kinda depend on which iPhone, etc is used.

Because circumstantial evidence has not proven your point while

casual browsing inter-webs, my response on this topic is limited.

(The statement in Reply above, could be taken as an Answer!)

According to the Related Article above, a suitable answer is there.

About eSIM on iPhone - Apple Support (but some can't use eSIM)

//support.apple.com/en-us/HT212780

Replacement SIM (esim) are available through web providers

along with new number assignments, & usually follow owners.