China’s Ministry of Industry and Information Technology (TENAA) requested technical information from Apple about the current iPhone models. The new phones have 4 GB of RAM

ModelBatteryRAM
iPhone XS Max3,174mAh4GB RAM
iPhone XS2,658mAh4GB RAM
iPhone X2,716mAh3GB RAM
iPhone XR2,942mAh3GB RAM
iPhone 8 Plus2,675mAh3GB RAM

Source: Benjamin Mamerow on 20. September 2018

The text was automatically translated from German into English. The German quotations were also translated in sense.