Apple Hub on Twitter: "Full specs including battery capacity and RAM inside the new iPhones have surfaced in regulatory filings. The iPhone XS and XS Max both feature 4GB of RAM, XR
How to Clear the RAM on Your iPhone XS, XS Max, or XR to Fix Problem Apps & Boost Performance « iOS & iPhone :: Gadget Hacks
iPhone XS Max 512GB HDD-5GB RAM-Rose Gold – Prevex Marketing