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How to move iPhone photos to a flash drive

You don’t need a special app: an iPhone can save photos straight to a USB flash drive through the Files app. You need a drive that fits your iPhone’s port (or an adapter), formatted so the iPhone can write to it. Here’s how, and what to do if you’d rather not buy a drive at all.

Copy photos to the drive

  1. Plug the drive in. iPhone 15 and later: a USB-C drive goes straight in. iPhone 14 and older: use a Lightning flash drive, or Apple’s Lightning to USB Camera Adapter with an ordinary drive.
  2. Open Photos, tap Select and choose the photos and videos.
  3. Tap the Share button, then Save to Files.
  4. Under Locations, choose the drive, pick or make a folder, and tap Save. Leave the drive plugged in until it finishes.

Choose the right drive

  • Port: iPhone 15 and later have USB-C; iPhone 14 and older have Lightning. A dual drive (USB-C on one end, USB-A on the other) also fits most computers.
  • Size: a year of photos and 4K video can easily pass 64 GB. 128 GB or 256 GB is a sensible start.
  • Speed: standard iPhone 15, 16 and 17 models copy at USB 2 speed whatever the drive; Pro models reach USB 3 speed with a USB 3 cable or drive.

Format it as exFAT

exFAT works on iPhone, Mac and Windows, and holds big video files. Drives formatted as FAT32 can’t store a single file over 4 GB, so long 4K videos fail to copy; NTFS (common on Windows) can’t be written by an iPhone at all. Reformat on a computer, choosing exFAT. Reformatting erases the drive, so copy anything on it off first.

If it goes wrong

  • Drive doesn’t appear in Files: check the format, unlock the iPhone, and try a powered adapter for hard drives and some SSDs. More fixes.
  • Copy stops on big selections: send a few hundred at a time, and keep the screen on.
  • Photos come out as HEIC: that’s the iPhone’s normal format. Windows may need an extension to open them. HEIC on Windows.
  • No eject button: wait until saving finishes and the drive’s light stops, then unplug.

Nothing checks that every photo arrived intact. Open a few photos and play a video from the drive before deleting anything from your iPhone.

No drive? Use a device you already own

An old phone, a tablet or a laptop can be your iPhone’s extra storage over Wi-Fi: no adapter, no format, nothing to unplug mid-copy. RoomDisk checks every file on both devices and tells you exactly which are safe to delete. $14.99 once, and you can check it connects before paying.

  1. Open roomdisk.com/app on the device that will keep the files and choose Use this device as the spare disk. It shows a QR code.
  2. On the phone or computer with the files, scan that code. A phone’s Camera app works: tap the roomdisk.com link that pops up. RoomDisk opens and shows its own code.
  3. On the spare disk, tap Scan reply and hold the phone’s screen up to its camera. (No camera there? Tap Share reply on the phone and open it on the disk device.)
  4. Both screens say Connected. Choose files and send. Each file is checked when it lands.

Many people use both: the spare device at home for everyday copies, and a flash drive as a second copy kept somewhere else.

Questions

Do I need the drive maker’s app?
No. The Files app works with ordinary USB drives. Some phone flash drives also have their own app, which isn’t required for copying.
Why won’t my 4K video copy to the flash drive?
The drive is probably FAT32, which can’t hold files over 4 GB. Reformat it as exFAT on a computer (this erases it).
Can I copy my whole camera roll at once?
You can try, but very large selections are slow and can stop part-way. Copy in batches, or use a spare device that resumes where it stopped.
Are the photos saved in full quality?
Save to Files keeps the original photo file (HEIC or JPEG) unless you choose a compatible format. Live Photos may be saved as still photos.

Try it with the two devices you have

Pay once, keep it. Nothing to install, no account.

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