Complete Guide: Backing Up Galaxy S25 Voice Recording Folders to USB-C

Samsung Galaxy S25 users often handle critical audio data, from professional meeting minutes to academic lectures. While cloud services are common, direct backup to a USB-C flash drive remains the most secure, cost-effective, and high-speed method for data preservation.

This guide provides a technical yet accessible walkthrough for managing your voice recording folders using OTG (On-The-Go) technology.

 

 

 

---

1. Requirements for a Successful Backup

To ensure seamless data transfer and file integrity, verify the following specifications:

• Hardware: A USB-C OTG flash drive or a standard USB drive with a high-quality USB-C adapter.
• File System: The Galaxy S25 recognizes FAT32 and exFAT. Use exFAT if you have individual recording files larger than 4GB.
• Power: Maintain at least 30% battery to prevent any write-errors during long transfer sessions.

---

2. How to Connect the USB-C Drive to Galaxy S25

1. Physical Link: Plug the USB-C drive into the port at the base of your Galaxy S25.
2. Verification: Swipe down from the top of the screen to open the notification shade. Look for the message "USB storage added".
3. Access: Open the [My Files] app, which is the default file management tool for Samsung Galaxy devices.

---

3. Step-by-Step Folder Backup Instructions

Follow these steps to migrate your recording folders from internal storage to your external drive:

Phase 1: Locate the Source Folders

Within the [My Files] app, navigate to:

Internal Storage > Recordings > Voice Recorder

All system-generated voice recordings and custom sub-folders are stored in this directory.

Phase 2: Selection and Copying

• Long-press a folder to enter selection mode.
• Select all folders you wish to archive.
• Tap [Copy] at the bottom of the interface.
  • Note: Using 'Copy' instead of 'Move' is a safety best practice to ensure no data is lost if the transfer is interrupted.

Phase 3: Destination Routing

• Navigate back to the main screen of [My Files].
• Select [USB Storage 1] under the Storage heading.
• (Optional) Tap the three-dot menu (top right) and select [Create folder] to organize your backups by year or project (e.g., "Voice_Archive_2026").

Phase 4: Finalizing the Transfer

• Enter your target folder on the USB drive.
• Tap [Copy here] at the bottom right. A progress bar will indicate the status of the transfer.

---

4. Resolving Connection and Recognition Issues

If the USB drive is not detected by your Galaxy S25, consider these common fixes:

• Case Interference: Ensure the USB-C connector is fully seated. Some protective cases are too thick for a flush connection.
• Format Incompatibility: If the drive was previously used on a Windows PC with NTFS, it may not show up. Reformat the drive to exFAT for universal compatibility.
• Port Maintenance: Check the USB-C port for pocket lint or dust, which can hinder data pins from making contact.

---

5. Critical Step: Safe Hardware Removal

To prevent data corruption or "raw drive" errors, you must software-eject the drive before pulling it out:

1. In the [My Files] app, find [USB Storage 1].
2. Tap the three-dot icon located next to the storage name.
3. Select [Unmount].
4. Wait for the "USB storage unmounted" toast message before physically removing the device.

---

6. USB-C Backup vs. Cloud Storage

Feature	USB-C OTG Backup	Cloud (OneDrive/Google)
Data Speed	Instant local transfer	Limited by upload bandwidth
Privacy	100% Offline	Subject to server-side terms
Reliability	Works without internet	Requires stable connection
Subscription	No recurring costs	Often requires monthly fees

Expert Recommendation for Data Safety

For maximum security, implement the 3-2-1 Strategy: Keep 3 total copies of your recordings, on 2 different local media (Phone + USB-C Drive), with 1 copy stored in a secondary location (PC or Cloud). This ensures that even if one device fails, your voice records remain intact.

 

 

샌디스크 USB 메모리 울트라 듀얼 드라이브 럭스 Type-C OTG USB 3.2 SDDDC4 1TB - USB메모리 | 쿠팡

As a Coupang Partner, I earn a small commission from qualifying purchases made through this post.