a question regarding iMessage

hello.

I have iPhone mini for phone both work and private calls and iMessages, and 13promax for daily use for internet and apps , like a private phone. Somehow have changed that mini into a Samsung phone and use the same sim (number), that means the number registered for iMessage is no longer available with this phone number, only with email address. when people sends me iMessage can't reach me properly. is there anything I can do ? thank you