How to Recover Deleted LINE Messages on Samsung Galaxy S25 Ultra Without a Backup

Selena Lee
Selena Lee Originally published Nov 06, 2026, updated Nov 06, 2026
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Use Dr.Fone - Data Recovery (Android) on Windows to look for deleted LINE messages and attachments on a supported Samsung Galaxy S25 Ultra without a backup. Choose Advanced Recovery, scan LINE, review message results under LINE and files under LINE Attachments, then recover selected available items to your PC. An existing LINE Note or a colleague's retained file can supply useful information separately, but neither reconstructs the deleted conversation.


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The LINE exchange you deleted may have contained the final delivery date, a revised quote or the message approving a shared document. Having an older copy of the file does not answer what was actually agreed. To recover deleted LINE messages on Samsung Galaxy S25 Ultra without a backup, Dr.Fone - Data Recovery (Android) helps you look for both available conversation records and the attachments that give them context.

This guide is organized around getting a useful work record back: check an existing Note for the key detail, identify the conversation and file you need, then preview the phone-scan results before saving selected copies to your PC. You do not need to turn an unrelated Google Drive file into a pretend LINE backup.

In this article
  1. Before you start
    1. Use the S25 Ultra entry, not a generic Galaxy claim
    2. Prepare the phone and a private PC destination
    3. Define the missing record before scanning
  2. Check existing LINE Notes for the agreed detail
  3. Ask for an existing file copy without confusing it with chat recovery
  4. Recover the work detail you need, not just a matching filename
  5. Common problems and fixes
  6. How to use Dr.Fone - Data Recovery (Android)
  7. Conclusion

Before you start

Use the S25 Ultra entry, not a generic Galaxy claim

Samsung Galaxy S25 Ultra is listed with kernel 6.6.98; no Android-version restriction is listed for this model. Check the phone identity in Settings > About phone and software details under Software information, keeping that kernel condition. Use the product's on-screen eligibility guidance rather than inferring support from the Galaxy name or the product's overall device count.

Prepare the phone and a private PC destination

Advanced Recovery is Windows-only. Have a USB data cable and a PC folder ready, especially if the conversation contains confidential work information. Keep LINE installed and do not clear its storage, factory-reset the phone or follow independent bootloader/Root procedures while trying to preserve local data. Follow the product's connection and access prompts.

Define the missing record before scanning

Note the person or group, approximate date, a distinctive phrase and which file revision you need. Advanced Recovery saves selected available results to PC, not back into LINE. LINE's built-in restore requires an applicable earlier backup: Standard Backup covers text, not chat photos, videos and files, and Premium Backup cannot roll back a manually deleted conversation.

Check existing LINE Notes for the agreed detail

A date, instruction or image may have been posted to the chat's shared Notes board before the conversation was deleted.

  1. Step 1 Open Notes in a chat you can still access

    Open the relevant chat, tap the menu at the top and choose Notes. Review only content that is actually present; Notes is a shared message board, not a trash folder for deleted chat messages.

  2. Step 2 Search the board for a specific term

    Use the search box at the top of Notes to enter a project term, text from the instruction or an existing hashtag. Open the matching Note and check the wording or image itself. If it supplies only part of the information, keep the remaining question in mind for the LINE conversation preview.

  • Finding an existing Note gives you retained content, not a restoration of the deleted exchange.
  • If the chat is only hidden, use Home > Settings > Chats > Hidden chats > Edit > Unhide chat. Unhiding does not recover history that was deleted.

Ask for an existing file copy without confusing it with chat recovery

A colleague or sender may still hold the document, photo or video even though your LINE copy is missing.

  1. Step 1 Request the specific retained item

    Ask the participant for the file revision or image you need, using its subject and approximate date to distinguish it from earlier drafts. For a missing instruction, ask for the relevant text or a screenshot of the exchange they still have.

  2. Step 2 Identify what the replacement does not answer

    Check the content you receive against your actual need. A resent document can solve a missing-file problem, but it does not by itself show the surrounding approval messages. Use the device scan below if those local conversation records are still important.

  • This depends on someone else retaining the item and agreeing to share it. It is not a LINE server restore or a guaranteed source of the original conversation.

Recover the work detail you need, not just a matching filename

Missing informationWhere to lookHow to judge the result
The final date or approval wordingExisting Notes, then available LINE conversation resultsRead the actual text and nearby context rather than relying on a chat name.
A quote, brief or other shared fileA participant's retained copy or LINE Attachments resultsOpen the available file and check its contents; a familiar filename alone is not enough.
A reference photo or videoExisting accessible album copies and LINE AttachmentsCheck the media itself. Message text and full media can have different availability.
The complete discussionAvailable LINE conversation resultsSave the useful records found; a fragment or one attachment does not establish a complete history.

Common problems and fixes

The attachment is found, but the approval message is missing

Switch from LINE Attachments to LINE and inspect available conversation results separately. Use the relevant phrase or contact in search where available. Save the useful attachment independently, but do not infer missing approval wording from the file.

Several results look like different versions of the same document

Preview what the software makes available and, after saving selected results, open the PC files to compare their actual contents. Keep the relevant conversation records too if found. Do not treat a filename, thumbnail or expected revision as proof that the full document was recovered.

The Windows scan cannot start on the S25 Ultra

Check the detected model and listed kernel 6.6.98, then follow the displayed connection or eligibility message. If the product does not offer Advanced Recovery, ask Dr.Fone support about that message instead of flashing a different kernel or resetting the phone.

How to use Dr.Fone - Data Recovery (Android)

Dr.Fone - Data Recovery (Android) turns a missing work conversation into a focused search for usable information. Its Windows-only Advanced Recovery mode can scan supported Galaxy S25 Ultra LINE data without an existing backup, show available conversation and attachment results separately and save selected records to your PC. This gives you a practical way to look for the wording of an agreement as well as a shared document, reference photo or video.

  • A LINE-focused scan looks for app records that a standalone search for documents would miss.
  • Separate conversation and LINE Attachments previews let you evaluate the message and the file on their own merits.
  • Selective PC recovery lets you keep the relevant exchange and supporting files together in a destination you choose.

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Follow the official Advanced Recovery workflow

  1. Step 1 Start the Windows Advanced Recovery workflow

    Open Dr.Fone and go to Toolbox > Data Recovery. Select Android > Recover Android Data, choose Advanced Recovery and click Start Scan. When prompted, connect the Galaxy S25 Ultra with a USB data cable and follow the displayed device-detection instructions.

    Select Standard Recovery or Advanced Recovery
  2. Step 2 Select LINE as the app to scan

    Choose LINE from the supported app-data categories and click Start Scan. You are scanning data from the connected phone, so an earlier LINE Google Drive backup is not a prerequisite for this workflow.

    Select app data types for Advanced Recovery
  3. Step 3 Let the scan finish with a stable connection

    Keep the S25 Ultra connected as Advanced Recovery scans. To interrupt the process, click Cancel before removing the USB cable. Follow the software's restart instructions if the phone becomes temporarily unresponsive after scanning or recovery.

    Scan Android app data with Advanced Recovery
  4. Step 4 Review the work exchange and file results

    Open LINE in the results sidebar and inspect the available conversations for the person, wording or date you need, using search and filters where offered. Open LINE Attachments separately to browse the available documents, photos and videos. Select only the results that address your missing record.

    Preview LINE conversations
    Preview LINE attachments
  5. Step 5 Recover selected records to a PC folder

    Click Recover, choose the destination on your computer and complete the save prompts. Open the saved output to check the selected message records and usable attachments. The result is a PC copy, not an import into the original LINE conversation.

Conclusion

When a missing LINE exchange leaves you without a deadline, approval or important attachment, Dr.Fone - Data Recovery (Android) helps you look for the information rather than guess from an old file. Scan a supported Samsung Galaxy S25 Ultra, preview available conversations and attachments, and save the records you choose to your PC. Download Dr.Fone for Windows and start the guided LINE recovery workflow.

FAQ

  • 1. How can I recover deleted LINE messages on Samsung Galaxy S25 Ultra without a backup?
    Use Dr.Fone - Data Recovery (Android) and Advanced Recovery on Windows to scan a supported S25 Ultra. Review LINE conversation results and LINE Attachments, then save selected available items to PC. No earlier LINE backup is needed for this scan, but only data it finds can be recovered.
  • 2. Can I recover a LINE attachment without the surrounding messages?
    The conversation and attachment results are reviewed separately. If the scan finds a usable file but not the complete exchange, you can select the file for PC saving without claiming the missing messages were recovered.
  • 3. Can Notes restore my deleted work conversation?
    No. A Note is an existing post on a shared board. It can contain a useful instruction or image that answers your question, but reading that post does not recreate deleted chat history.
  • 4. Would Premium Backup recover the conversation I already deleted?
    LINE's official help says Premium Backup cannot be used to restore a manually deleted chat. An applicable Standard Backup made before deletion is a different text-history route; activating a backup feature now does not create the missing historical copy.
  • 5. Can the scan guarantee the complete agreement and original files?
    No. Review the actual text and usable files found. Recovering a fragment, a thumbnail or one attachment does not establish a complete discussion or guarantee an original-quality photo or video.
OUR EXPERT
Selena Lee

Selena Lee

chief editor

Chief Editor of the Dr.Fone team since 2012, Selena is a veteran technology editor known for turning complex iOS and Android topics into clear, user-focused guidance.

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