Also, we know that the SM6115 (662), made in 11nm process technology, offers support for NavIC out-of-the-box, same as much better SM7125 (720G), 8nm, that offers NavIC support too:
-- https://www.qualcomm.com/media/documents/files/qualcomm-snapdragon-662-mobile-platform-product-brief.pdf
-- https://www.qualcomm.com/media/documents/files/qualcomm-snapdragon-720g-mobile-platform-product-brief.pdf
Please note that SM7150-AB (730G) doesn't have support for NavIC and therefore might be out of the eventual SoC upgrade consideration.