iPhone 14 and 14 Plus are available in three internal storage configurations: 128, 256, and 512 GB. It has 6 GB of RAM, an increase over the iPhone 13 and 13 mini model's 4 GB of RAM. The iPhone 14 and 14 Plus have the same IP68 rating for dust and water resistance as their predecessors.
Extract the different storage configurations available to the iPhone 14 that are mentioned in the text. Put them in a comma separated list.
128 GB, 256 GB, 512 GB