According to a recent investor note from GF Securities analyst Jeff Pu, Apple might have a pair of surprises in store for the iPhone 17 lineup this fall. Most notably, Pu has seemingly changed his prediction that the entire iPhone 17 lineup will use a version of the A19 chip. Instead, he now believes the base model iPhone 17 will use the same A18 chip that’s used in the iPhone 16. Pu had previously predicted that the entire iPhone 17 lineup would use the A19 chip and the differentiating factor would be the RAM. The analyst had said the iPhone 17 and iPhone 17 Air would have 8GB, while the iPhone 17 Pro and iPhone 17 Pro Max would have 12GB of RAM. Now, Pu claims that the iPhone 17 will use 8GB of RAM, while the iPhone 17 Air will feature 12GB of RAM just like the Pro models. Also in this analyst note, Pu says that all four iPhone 17 models will adopt a new metalens technology for the proximity sensor. The “metalens” technology may help Apple dramatically reduce the size of the Face ID sensor. Previously, Pu had said this change would only come to the iPhone 17 Pro Max. If it pans out, this means the entire iPhone 17 will feature a smaller Dynamic Island. Notably, this contradicts Ming-Chi Kuo, who reported in January that the Dynamic Island across the iPhone 17 lineup will be “largely unchanged” compared to the iPhone 16 models Here is Pu’s full breakdown of the iPhone 17 lineup specifications: SpeciPhone 17iPhone 17 AiriPhone 17 ProiPhone 17 Pro MaxLaunchSep-25Sep-25Sep-25Sep-25Display6.1″6.6″6.3″6.9″ProcessorA18 N3EA19 N3PA19 Pro, N3PA19 Pro, N3PDRAMLPDDR5 8GBLPDDR5 12GBLPDDR5X 12GBLPDDR5X 12GBFront Camera24MP, 6P24MP, 6P24MP, 6P24MP, 6PRear Camera48MP 7P, 12MP 5P48MP, 7P48MP 7P, Periscope48MP 1G+3P, 48MP 6P48MP 7P, Periscope48MP 1G+3P, 48MP 6PFace IDStructured lightStructured lightStructured lightStructured lightCasingAluminumTitaniumAluminumAluminumModemQualcommQualcomm or AppleQualcommQualcommCharging35W35W35W35WNPIFoxconnFoxconnFoxconnICT My favorite iPhone accessories: Follow Chance: Threads, Bluesky, Instagram, and Mastodon.  Add 9to5Mac to your Google News feed.  FTC: We use income earning auto affiliate links. More.You’re reading 9to5Mac — experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel #latest #iphone #rumors #a18 #chip