However, you can expand your available space through , external hardware , or storage management . 1. iCloud+ Cloud Storage
Can I upgrade the iPhone 6 Plus from 64 GB storage to 128 GB
For an iPhone 6, it is . The flash memory is soldered to the logic board and cannot be swapped or upgraded like a computer's hard drive.
This is the most common way to "buy" more storage. It allows you to offload photos and backups to Apple's servers to free up local phone space.