How to connect external drive to iPhone

most of external drive (SSD) products provide USB type-C and USB 3

from https://en.wikipedia.org/wiki/USB-C

from https://en.wikipedia.org/wiki/USB

Unlike Andriod phone, iPhone is with Lightning.

so, you need the Adapter (from USB to Lightning) with charging port. The charging port is required, otherwise, the external drive will not get enough power. This is different from lots of Android phones.

Now, let’s put them together.

Done!