Apple Hub on X: "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
Original Apple iPhone XS Max 6.5" RAM 4GB ROM 64GB/256GB/512GB Smartphone Hexa Core IOS A12 Bionic NFC LTE 4G Cell Phone - AliExpress
Apple iPhone Xs - With Facetime - 6.5" -64GB ROM- 4GB RAM -4G LTE - Single Sim & E-sim - 2658mAh - Onigx
Apple IPhone XS Max (4GB RAM, 256GB ROM) - Global Instruments Store
Verizon Apple iPhone XS 64GB, Gold - Upgrade Only - Walmart.com
Apple iPhone XS specs - PhoneArena
Apple iPhone XS Unlocked 4G LTE - Gray (Renewed) Smartphone; GSM/CDMA; 4 GB RAM/64 GB Storage; 5.8'' Super Retina HD - Micro Center
New iPhone XS, XS Max and XR benchmarked, RAM revealed - GSMArena.com news
RAM® Form-Fit Cradle for Apple iPhone X & XS – RAM Mounts