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Sound is Muffled or Absent in One or Both Speakers

Speakers aren't emitting sound or the sound is muffled.

Speaker Damaged

Small debris can clog and muffle the speaker grills. Inspect and clean the speaker grills with short bursts of compressed air or a finely-bristled brush, if visible debris is present.

Check for any software conflicts with any installed third-party applications and remove them as necessary.

If sounds still does not return after external cleaning and eliminating possible software conflicts, debris might be inside the device, requiring a more thorough internal cleaning and/or replacement of the speaker.

Sound is Crackling

Speakers make a crackling sound when audio is on.

Poor Audio Quality

Playing poorly compressed audio at high volumes can cause a crackling effect that might incorrectly suggest a problem with the speakers. Ensure that the problem is for all sound before assuming any speaker defect.

If the problem continues, consider replacing your bottom speaker.

Speaker Damaged

Crackling sound can also be a symptom of water damage. Ensure the device is dry and, if the problem persists, replacement of the speaker may be necessary.

If the problem continues, consider replacing your bottom speaker.

Headphones Not Working

There does not appear to be any sound coming from the headphones when they are plugged into the phone.

Audio Jack Damaged

Ensure the headphones are working properly with other devices and are compatible with the HTC One M8. The HTC One M8 has a standard 3.5 mm headphone jack.

If the problem is persists only for the HTC One M8, replacement of the headphone jack may be necessary.

Screen Does Not Auto-Rotate

Phone will not transition from portrait to landscape mode when phone is rotated.

Incompatible Application

Not all Android applications are designed with screen rotation in mind. Verify that the problem is consistent among all applications.

Automatic Screen Rotation is Turned Off

  • Go to settings
  • Go to Display & gestures
  • Select Auto-rotate screen option

G-Sensor Needs Calibration

  • With two fingers, swipe down on the status bar
  • Press Settings button (cog icon)
  • Go to Display & gestures
  • Go to G-Sensor Calibration
  • Place phone on flat surface and calibrate
  • When calibration is done, press OK

Screen is Not Functioning

The phone's touch screen is either damaged or isn't responding to the users touch.

Screen is Cracked

The display is made with Corning Gorilla Glass and is damage resistant. Most scratches will be surface level and cosmetic only. If operation is impaired, proceed with the replacement of the screen.

Screen is Unresponsive

Background applications might use up too much memory and slow down the phone until it is unresponsive.

  • Restart the phone.
  • Go to Settings
  • Go to Accessibility
  • Go to Services
  • Select Turn off all apps

If the problem continues, consider replacing the screen.

Phone Won't Charge

Phone does not appear to be charging when plugged into charger.

Charger Issues

Verify that the issue is with the phone and not with the power source or charger cable. The HTC One M8 needs a micro-USB charger.

If the problem continues, consider replacing the charging port.

Mirco-USB Port Problems

Ensure that the phone does not have debris in the mirco-USB port but cleaning it out with small bursts of compressed air. If the problems persists then the port may be damage and a charging port replacement will be required.

Phone Won't Power On

The phone does not power on when the power button is pressed.

Phone Has No Charge

The phone may have simply lost its charge. Plug in the charger to verify that it isn't the problem. If the problem persists then boot the phone into safe mode.

  • Press and hold the power button until the Phone Options prompt appears
  • Release the power button
  • Press and hold the Power off until the 'Reboot to safe mode' option appears
  • Press Restart

If the phone can successfully boot into safe mode than one of the applications is preventing a successful boot up.

If the problem continues, consider replacing the battery.

Phone Won't Hold Charge

The device discharges quickly

Phone Charges Very Slowly

The battery may need to be re-calibrated.

  • Shut off the phone
  • Plug the charger in and let it charge for ten minutes
  • Hold down the power and the volume down button for two minutes while it boots back up

If the problem continues, consider replacing the battery.

Phone Loses Charge Very Quickly

Certain applications may be using too much power.

  • Go to Settings
  • Go to Power
  • Verify that no applications are using excess amounts of power.

If the problem continues, consider replacing the battery.

Camera Not Functioning

The camera displays no image when activated.

Visible Damage

There may be several scratches on the protective film located on the camera. A replacement of the film may be necessary if the scratches are obscuring the image. If the scratches go past the protective film then a replacement of the camera may be necessary.

SD Card Not Functioning

SD Card data cannot be accessed.

Wrong SD Card

Ensure that SD Card is a Micro-SD card. Attempting to use a different SD card could damage the phone.

Corrupt SD Card

Before using the SD card make sure that you properly eject it

  • Go to Settings
  • Go to Storage
  • Go to Unmount

Verify with whether the SD Card is corrupt by using it on another device.

No Cellular Service

The device does not have connection to the carrier network.

SIM Card Not Functioning

Faulty SIM card installed in device. Consider replacing with new SIM card from your wireless carrier.

SIM Card Slot Contains Debris

There SIM card may contain debris. Apply some rubbing alcohol and gently clean the SIM Card off.

Wrong SIM Card

Ensure that the SIM Card is the right one for the HTC One M8. The HTC One M8 supports the standard Nano SIM Ca

My htc one m8 dual sim tray got stuck and not coming out. The technician says dual sim card tray with dual sim card reader with flex cable is required for repair. Will this solve the problem. Can this be changed without other parts getting damaged. In kuwait, there is no spares for sai item. Can anyone guide ? Rajasekar

Vardhini Rajasekar - Responder

My HTC One M8 gets super screwy whenever I plug in the charer(swipes between screens on its own, types in random letters while I have the keyboard open, reacts as if I'm selecting things that I never selected, ect.) Does anyone know what the possible issues are and how I can solve this? It's quite annoying

Devon Dawson - Responder

you need to readjust your screen calibration in settings. also if there are any cracks on your screen this could also cause issues.

ymmcplst -

theres nothing wrong with your screen, just change your usb cable or charger. and there, problem solved.

Ariel Nelson -

Since i installed the update last month, every freaking time my m8 crashes I lose my settings. I have even lost my home screens, days of mobile bookmarks that went unsynced (wtf). I can't confirm that this happens every time, but usually it will say "optimizing apps" when it restarts after a crash. I also usually have a crash when the battery gets less than 35%. I am on an unrooted verizon trash m8.

zohir rahman - Responder

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