Member Avatar for pro_learner

My SAMSUNG mobile phone has faced to a virus attack(I think).It stucks sometimes.And sometimes it restarts automatically.When i connect it to my laptop & browse it's memory card,it shows a file calls "_UnqiueId.dat".I deleted that file.But when i reconnect the phone to laptop,it shows that file again.I think that file is a virus or something like that.Please anybody can help me to overcome this problem?

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Dani AI

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The behavior you described — the file named _UnqiueId.dat reappearing on the memory card after deletion plus intermittent freezes and restarts — strongly suggests a misbehaving app or malware that writes a persistent file to the SD card. reported the file; asked a good diagnostic question about timing. Because the card keeps regenerating the file, treat the card and phone as still-infected until proven otherwise.

Immediate, practical steps (do these in order):

  • Power off and remove the SD card. Do not browse it from other phones first. Copy only personal photos/docs you absolutely need to a trusted PC folder (do not copy unknown apps or program files).

  • On a Windows PC show hidden/system files and run these commands (replace X: with the SD drive letter) to reveal/remove attributes and the file:

    attrib -h -r -s /s /d X:\*.*
del /f X:\_UnqiueId.dat

    Back up important files before deletion.

  • Scan the SD card with an up-to-date antivirus on the PC. If malware is detected, quarantine and then reformat the card (full format), not a quick format. After reformat, do not copy back unknown files or APKs.

If the file reappears after the cleaned card is reinserted, the phone itself is recreating it:

  • Boot the phone into safe mode (many Android phones: hold Power, then long-press Power off or hold Volume Down during boot) and look for recently installed or unfamiliar apps in Settings -> Applications; uninstall any suspicious ones.
  • Disable "Unknown sources" or "Install unknown apps" to prevent sideloading.
  • If uninstalling in safe mode does not stop the behavior, back up contacts/photos and perform a factory reset as a last step.

Final notes and cautions: avoid connecting the phone/SD card to other devices until cleaned to prevent spread. If uncomfortable with these steps or if problems persist after a factory reset, consider professional service or reflashing the stock firmware for your Samsung model.

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Member Avatar for Portgas D. Ace

Unlikely, How long have you had the phone, has it always been a problem?

Member Avatar for pro_learner

It's from 2 months.Not always,but sometimes.....

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