The upcoming iPhone 16 models are rumored to all be equipped with the powerful A18 chip, supported by evidence found in Apple's backend code. The discovery of five new iPhone model identifiers suggests that each device will indeed contain the A18 chip. Past naming conventions indicate that the model numbers starting with the same digit will have the same chip, as seen with the previous iPhone 15 lineup. The iPhone 16 and iPhone 16 Plus are expected to increase RAM from 6GB to 8GB, while rumors suggest a faster Neural Engine for the iPhone 16. While it's uncertain why there are five model identifiers, it's anticipated that there will be four iPhone 16 models, with the possibility of an upgraded chip for the Pro and Pro Max versions. Stay tuned for more updates on the latest technology developments.