Android has one real advantage over the iPhone when it comes to getting photos onto a drive: its storage is directly browsable. There is no separate photo database to export from and no share sheet to negotiate. Your pictures are files, in folders, and a file manager can copy those folders to a USB drive the same way it would copy anything else.
The trade-off is that Android gives you more places to look. Photos from the camera, screenshots, downloads, and media received in messaging apps all live in different directories, and if you copy only the obvious one you will miss a large part of your library.
This guide covers where your photos actually are, how to connect a drive, both ways to do the copy, and the handful of Android-specific quirks worth understanding before you trust the result.
If your reason for doing this is that the phone has run out of room, the wider problem — including why deleting photos often frees nothing at first — is covered in what to do when phone storage is full. The iPhone equivalent of this guide is here.
Does your phone support USB OTG?
Everything here depends on USB OTG (On-The-Go), the standard that lets a phone act as a host and read a connected drive rather than behaving as a device itself.
Nearly every Android phone made in the past decade supports it, and any phone with a USB-C port almost certainly does. A small number of budget devices omit it.
The fastest way to find out is simply to plug a drive in. If OTG is working you will normally get a notification, or the drive will appear in your file manager within a few seconds.
If nothing happens, suspect the adapter before the phone. A charge-only USB-C cable or adapter will not carry data, and these are visually identical to ones that do. Using a known-good OTG adapter is the single most useful troubleshooting step.
What you need
The connection. A USB-C flash drive or SSD plugs directly into any modern Android phone. A standard USB-A drive needs a USB-C OTG adapter, which costs very little. Older phones with micro-USB ports need a micro-USB OTG adapter instead.
The drive. Any standard USB drive works. A flash drive is fine for a few thousand photos; a portable SSD is faster and more durable for a full library and for repeat backups.
Power. Phones supply limited power over their port. Flash drives and small bus-powered SSDs are usually fine, but a portable hard disk with spinning platters may draw more than the phone can provide, mount briefly, then disconnect partway through a copy. If transfers keep dying at unpredictable points, use a powered USB hub or a drive with its own power supply.
Format the drive exFAT. This matters more than it sounds:
| Format | Android support | Notes |
|---|---|---|
| exFAT | Read and write | Recommended. Works on Android, iOS, Windows, macOS. No practical file size limit. |
| FAT32 | Read and write | Cannot store any single file over 4 GB. Long 4K videos will fail. |
| NTFS | Usually read-only | A drive formatted on a Windows PC often cannot be written to. |
| ext4 | Varies | Linux-native; inconsistent across devices and awkward elsewhere. |
The FAT32 limit is the one that catches people. Most flash drives ship formatted FAT32, photos are comfortably under the ceiling, and everything appears to work — until a long 4K recording refuses to copy. The drive is not full and the file is not damaged; the format simply cannot represent a file that size.
Where are your photos actually stored on Android?
This is the part with no iPhone equivalent, and getting it right is the difference between a complete backup and a partial one. Open your file manager and look in internal storage:
DCIM/Camera— photos and videos from the camera app. This is the main one, and on most phones it is the largest.Pictures/ScreenshotsorDCIM/Screenshots— screenshots, depending on manufacturer.Pictures— images saved by other apps, and often edited copies.Movies— video from apps other than the camera.Download— anything saved from a browser or received as a file.Android/media/com.whatsapp/WhatsApp/Media— WhatsApp photos, videos, and voice notes on Android 11 and later. On older versions this is a top-levelWhatsApp/Mediafolder instead.
Manufacturers vary. Samsung, Xiaomi, and others sometimes add their own directories for camera modes, screen recordings, or dual-camera output, so it is worth scrolling through internal storage once rather than assuming.
A useful sanity check: if DCIM/Camera accounts for far less than the Photos figure your phone reports under Settings → Storage, your library is spread across more folders than you have found.
Method 1: Your phone's file manager
Every Android phone ships with a file manager — Files by Google on Pixel and stock-Android devices, My Files on Samsung, and a manufacturer equivalent elsewhere. Any of them can do this.
- Connect the drive and wait for it to appear. In Files by Google it shows under Browse; in Samsung My Files it appears as USB storage.
- Open Internal storage and navigate to the folder you want, starting with
DCIM/Camera. - Select the folder, or open it and select all files inside it.
- Choose Copy (not Move — leave the originals until you have verified the copy).
- Navigate to the USB drive, create a folder if you want, and Paste.
- Repeat for each of the other media folders listed above.
- When it finishes, eject the drive from the notification shade or the file manager before unplugging.
Copy, not move. This deserves its own line. Move deletes the original as it goes, so an interrupted move can leave files on neither the phone nor the drive. Copy first, verify, then delete.
Where this gets tedious. It works and costs nothing, but you are doing the bookkeeping yourself. You have to visit every folder, remember which ones you covered, and repeat the whole thing next time with no record of what was already copied. Large copies through a file manager also tend to restart from the beginning if interrupted.
Method 2: A dedicated backup app
An app that enumerates your media directly avoids the folder-hunting problem, because it knows where everything lives and tracks what has already been copied.
This is what VaultDrive does on Android. Connect the drive, choose what to include, and start it.
What it handles that manual copying does not:
- Original quality, byte for byte. No re-encoding, no downscaling.
- Metadata preserved. Capture date, location, and camera data stay in the file.
- Readable folder structure. Files land under
VaultDriveBackup/[Device]/in folders by media type, then year, then month — ordinary directories, not an archive format — plus aRESTORE_GUIDE.htmlexplaining the layout. - Resume after interruption. Files are written atomically, so unplugging mid-backup does not leave a half-written file. Reconnect and it continues.
- Incremental after the first run. Later backups copy only what is new, turning a long first pass into a short routine one.
- Multiple phones on one drive. Each device gets its own labelled folder, so a family can share a single drive without mixing libraries.
- WhatsApp media is included as a first-class target rather than a folder you have to remember.
- Nothing is uploaded. No account, no sign-up, no telemetry — the files travel over the cable only.
Core backup is free up to 200 files or 2 GB per run, which is enough to confirm it behaves as you expect. Removing the cap is a one-time purchase, not a subscription. WhatsApp media backup and biometric app lock are part of the paid tier on Android.
Where the built-in file manager is genuinely the better choice, and where it stops being enough, is compared in file manager vs VaultDrive.
What about WhatsApp media?
On a phone that has been in daily use for a few years, this is frequently the largest single consumer of storage after the camera roll, and tens of gigabytes is common.
The reason is that WhatsApp saves every photo, video, and voice note you receive to local storage by default. Group chats accelerate this considerably — every meme, forwarded video, and photo from every group lands on your phone and stays there.
It is also the easiest large win available, because most of it is content you have already seen and have no reason to keep on the device. Copy the folder to the drive, confirm it arrived, and then clear it from the phone.
Two things to know. Media you delete locally stays available to re-download from the chat for a period, but not indefinitely, so treat the copy on the drive as the real one. And if you have WhatsApp's own Google Drive backup enabled, that is a chat-history backup tied to your account — useful for restoring WhatsApp itself, not the same thing as holding the media as ordinary files.
Why do backed-up photos show today's date?
This one alarms people, and it is worth understanding rather than worrying about.
When any app copies a file to a USB drive on Android, Android sets the file's filesystem timestamp to the time of the copy, and gives apps no reliable way to override it. So a file manager listing the drive may show today's date against a photo taken three years ago.
The photo itself is unchanged. The original capture date, camera model, and GPS coordinates live in the file's EXIF data, inside the file, and a byte-for-byte copy preserves all of it. Photo applications read EXIF rather than the filesystem timestamp, so your library will still sort and map correctly when you open it on a computer.
To confirm for yourself, open a copied file on a computer and check its properties or details — the capture date shown there is the real one.
This is a limitation of how Android writes to external drives, not a sign that something was lost.
How do you verify the backup?
Two minutes here is what turns a copy into a backup.
Compare the numbers. Check the file count and total size on the drive against the folders you copied. Small differences are normal; a large shortfall means the copy did not finish.
Open real files from the drive. Not thumbnails, which can render from cached previews even when the underlying file is broken. Open several, and include at least one long video, since those are most likely to have been truncated or blocked by a format limit.
Check EXIF on one file, as described above, to confirm metadata survived.
Eject before unplugging. Pull a drive mid-write and you can damage the directory you just spent an hour filling.
Only once that passes should you delete anything from the phone. And if Google Photos backup is switched on, remember that deleting a photo from the phone also removes it from your Google Photos library — items go to a trash for 60 days and are then gone. That is sync behaviour, not backup behaviour, and the distinction is covered in backup vs. sync.
Troubleshooting
The drive does not appear. Try a different adapter first — charge-only cables are the most common cause. Then check power, since an underpowered drive can mount and vanish. Some file managers also need you to look under a separate USB or external storage entry rather than the main storage list.
The drive appears but nothing can be copied to it. It is almost certainly formatted NTFS, which most Android devices can read but not write. Reformat as exFAT.
A long video will not copy. The drive is FAT32, which cannot hold a single file over 4 GB. Reformat as exFAT.
Copies keep stopping partway. Power, usually. Use a powered hub or a self-powered drive.
You cannot open Android/data. Since Android 11, scoped storage blocks file managers from browsing that directory. Android/media, where WhatsApp keeps its media on modern versions, is still accessible — but app data stored under Android/data generally needs the app itself to export it.
The drive fills up faster than expected. Check whether you are copying original files or something has been re-encoding along the way, and confirm you are not copying the same folders twice under different names.
Would an SD card work instead?
If your phone has a microSD slot — many mid-range Android phones still do, though most flagships have dropped them — a card is a reasonable option, and the copy works exactly the same way.
The caveat is that a card sitting inside the phone shares the phone's fate. Dropped in water, lost, or stolen, and both copies go together. As an overflow for storage it is useful. As a backup it only counts if the card comes out and lives somewhere else.
Cards of 64 GB and larger normally ship formatted exFAT already, which is what you want.
Frequently Asked Questions
Can I back up Android photos to a USB drive without a computer?
Yes. Any Android phone that supports USB OTG can read and write a USB drive directly. A USB-C drive plugs straight in, and a USB-A drive needs an inexpensive OTG adapter. Because Android's storage is directly browsable, the built-in file manager can copy folders across without exporting anything first.
Where are photos stored on an Android phone?
Camera photos and videos are in DCIM/Camera. Screenshots are usually in Pictures/Screenshots or DCIM/Screenshots depending on the manufacturer. Downloaded images are in Download, and video from other apps is often in Movies. WhatsApp media lives under Android/media/com.whatsapp on Android 11 and later, and in a top-level WhatsApp folder on older versions.
How do I know if my phone supports USB OTG?
Nearly every Android phone made in the last decade does, and any phone with a USB-C port almost certainly does. The simplest test is to plug a drive in and see whether a notification appears or the drive shows up in your file manager. If nothing happens, check that the cable or adapter is a genuine OTG adapter rather than a charge-only one, since those are the most common culprits.
How should I format a USB drive for Android?
Use exFAT. It works on Android, iOS, Windows, and macOS, and has no practical file size limit. FAT32 works but cannot store any single file larger than 4 GB, which a long 4K video will exceed. Most Android devices cannot write to NTFS, so a drive formatted for Windows may appear while refusing every copy.
Why does a backed-up photo show today's date on the USB drive?
This is an Android limitation rather than a fault in the copy. When any app writes a file to a USB drive, Android sets the filesystem timestamp to the copy time and gives apps no reliable way to override it, so a file manager may show today's date. The photo itself is unchanged: the original capture date, camera details, and GPS remain in the file's EXIF data, which is what photo apps read.
Why is WhatsApp using so much storage on my Android phone?
WhatsApp saves every photo, video, and voice note you receive to local storage, and on a heavily used phone that accumulates into tens of gigabytes over a few years. It is frequently the largest consumer of space after the camera roll, and because most of it is content you have already seen, copying it to a drive and then clearing it is often the single biggest recovery available.
The short version
Android makes this straightforward because your photos are already files in folders. Plug in a USB-C drive, or a USB-A drive with an OTG adapter, and a file manager can copy them across.
Format the drive exFAT before you start — that avoids both the 4 GB video limit on FAT32 and the read-only problem with NTFS, which between them account for most failed copies.
Then cover more than DCIM/Camera. Screenshots, downloads, and especially WhatsApp media live elsewhere, and missing them is the most common way an Android backup ends up incomplete.
Copy rather than move, verify before you delete, and ignore the dates your file manager shows on the drive — the real ones are inside the files.