Xcode Confirms 2GB of RAM in iPhone 6s and 6s Plus, 4GB of RAM in iPad Pro
Apple development tool Xcode seemingly confirms the iPhone 6s and iPhone 6s Plus each have 2GB of RAM, while the iPad Pro has 4GB of RAM, as discovered by iOS developer Hamza Sood.
The image asset is chosen based on the memoryClass key in the simdevicetype’s capabilities.plist. 0 = <1GB, 1 = 1GB, 2 = 2GB, 3 = 4GB. — Hamza Sood (@hamzasood) September 13, 2015
As usual, Apple itself did not mention how much RAM the iPhone 6s, iPhone 6s Plus or iPad Pro have during its "Hey Siri" media event, nor does it include RAM on the tech spec pages for any of the devices.