Apple may not be bringing Apple Intelligence to iPhone 15, which has 6GB of RAM vs. iPhone 15 Pro's 8GB, due to RAM requirements for on-device AI processing (Andrew Williams/Wired)

https://www.wired.com/story/apple-intelligence-wont-work-on-100s-of-millions-of-iphones-but-maybe-it-could/
http://www.techmeme.com/240615/p4#a240615p4