If your Samsung Galaxy S25 Ultra has a black screen but is still responsive or showing signs of life, there are several troubleshooting methods you can try. The issue could be caused by software glitches, display malfunctions, or power-related problems.

Solutions

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1. Force Restart Your Phone

A force restart can refresh the system and fix minor software glitches causing the black screen.

Press and hold the Volume Down button and Power button simultaneously.
Continue holding both buttons for about 10-15 seconds.
If the Samsung logo appears, release the buttons and wait for the device to boot.

2. Charge Your Phone and Check the Screen

Your phone may appear to have a black screen due to a completely drained battery.

Connect your phone to an official Samsung charger.
Leave it charging for at least 15-30 minutes.
Try turning it on by pressing and holding the Power button.
If it still doesn’t respond, try a different charger and cable.

3. Adjust Screen Brightness (If Screen Is Dim)

Sometimes, the screen may be extremely dim, making it appear black.

Try shining a flashlight on the screen to check for faint visibility.
If you see a dim display, attempt to increase the brightness by swiping up on the screen (if touch is responsive).
If the touch isn’t working, connect a USB-C mouse via an OTG adapter and navigate to Settings > Display.

4. Boot into Safe Mode

Safe Mode disables third-party apps that might be causing the black screen.

Press and hold the Power button until the power menu appears.
Tap and hold Power Off until the Safe Mode option appears.
Select Safe Mode and wait for your device to reboot.
If the screen works in Safe Mode, uninstall any recently installed apps causing the issue.

5. Perform a Soft Reset via Recovery Mode

Entering Recovery Mode allows you to perform a soft reset without data loss.

Press and hold Volume Up and Power buttons simultaneously.
Release both buttons when the Samsung logo appears.
Use the Volume buttons to navigate to Reboot System Now.
Press the Power button to confirm.

6. Check for Physical Damage or Water Exposure

If the phone was recently dropped or exposed to water, hardware damage might be the cause.

Inspect the screen for cracks or visible damage.
If your phone was submerged in water, dry it completely and place it in a bag of silica gel for at least 24 hours.
If the screen remains black, seek professional repair services.

7. Connect to a Computer

Your phone may be on, but the display is not working. Connecting to a computer can confirm if it is still operational.

Use a USB cable to connect your phone to a PC.
If the computer recognizes the device, back up your data immediately.
Try using Samsung Smart Switch to update the software.

8. Check for Screen Malfunctions Using a Call

If the screen is black but the phone is working, testing an incoming call can confirm the issue.

Use another phone to call your number.
If the phone rings but the screen remains black, the display might be malfunctioning.
Consider taking it to a repair center for screen replacement.

9. Update Software via Samsung Smart Switch

A firmware glitch may be causing the black screen issue, and updating the software can help.

Download and install Samsung Smart Switch on your PC.
Connect your phone to the PC via USB.
If the device is recognized, click Update to install the latest firmware.
Restart the phone after the update completes.

10. Contact Samsung Support

If none of the solutions work, professional assistance may be required.

Visit the official Samsung Support website.
Schedule an appointment at an authorized Samsung service center.
Explain the issue and follow any troubleshooting steps provided by support.

These methods should help resolve the black screen issue on your Samsung Galaxy S25 Ultra. If the problem persists, it may be a hardware-related defect requiring professional repair.

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