Here is the official spec sheet for the Galaxy S9 and Galaxy S9+ - SamMobile
COMPARE: Samsung Galaxy S9 vs S9 Plus Specs – Phandroid
Samsung Galaxy S9 Plus review | TechRadar
Samsung Galaxy S9+ Specifications, Features & Price - GadgetStripe
Roland Quandt on Twitter: "Here are the Samsung Galaxy S9 and S9+ with dual aperture cameras, AKG stereo speakers and up to 6 GB RAM - (almost) all specs + a ton