iPhone 15 also marks Apple’s transition to wireless features, where the volume and power buttons will be replaced by solid-state buttons similar to the home button of the iPhone 7 and later.
While there are strong reports that the next generation of iPhones will come with Type-C, don’t get your hopes up since Apple has time until 2024 to comply with EU regulations.
With the iPhone 15 series, we will see Apple’s first 3-nanometer chip. As for the RAM, rumors suggest a bump to 8GB from 6GB.