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Troubleshoot issues related to making and receiving calls on your HTC One A9

Last Updated: Nov 23, 2015

This article helps troubleshoot making or receiving calls on your HTC One A9

You may have issues with calls if you have:

  • A low signal strength
  • Trouble making or receiving calls
  • Frequently dropped calls

These steps help identify and resolve the underlying cause. After completing each step, test to see if the issue is fixed. If not, continue to the next step.

  1. Verify airplane mode is turned off.

    1. Press and hold the Power key.
    2. If Airplane mode is ON displays, tap Airplane mode.
  2. Update your Sprint data profile.

    The data profile contains settings your phone needs to connect to the Sprint network.

    1. Access Sprint Zone.
    2. Scroll to and tap Support.
    3. Tap Diagnostics.
    4. Tap Update profile.
    5. After the profile update is complete, tap OK.
  3. Verify if coverage is available at your current location.

    If your HTC One A9 has low signal strength, see if your location is within Sprint voice coverage on the Sprint coverage map.

  4. Reset the network settings.

    Resetting the network settings reconnects your phone to the Sprint network and does not erase any of your content or data.

    1. From the home screen, tap the Phone icon.
    2. Enter ##72786#.

      Note: The Final # may not display.

    3. Tap MENU.
    4. Tap Reset.
    5. Tap OK.
    6. The phone will restart and Hands Free Activation will begin.
  5. Do you know if other Sprint customers are experiencing the same issue in the same location?

    • If yes or you don't know: Please contact Sprint Customer Care for help.
    • If no: Please find the nearest Sprint Repair center and schedule an appointment so a Sprint technician can further diagnose the issue.

Note: To optimize device performance, be sure your HTC One A9 is running the most recent device software. Check for software updates.

If you're still having issues, please contact Sprint Customer Care for more help.

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