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Troubleshoot issues related to making and receiving calls on your HTC EVO 4G LTE

Last Updated: May 16, 2014

This article helps troubleshoot making or receiving calls on your HTC EVO 4G LTE.

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.

    Airplane mode is a feature that prevents your device from sending or receiving a wireless transmission.

    Turn airplane mode off.

  2. Verify your HTC EVO™ 4G LTE is connected to the Sprint network using Sprint Zone.

    Be sure your HTC EVO 4G LTE is connected to the Sprint voice network to make or receive calls.

    1. Access Sprint Zone.
    2. Tap My Device.
    3. Tap Dashboard.
    4. Scroll to and tap Voice Network.
    5. Your voice connection status displays.
    6. Tap Network PRL.
    7. After the PRL update is complete, tap OK.
    8. Test your device to see if the issue is resolved.
  3. Verify if coverage is available at your current location.

    If your HTC EVO 4G LTE has low signal strength, see if your location is within Sprint voice coverage on the Sprint coverage map.

  4. Perform a soft reset.

    A soft reset reconnects your HTC EVO 4G LTE to the Sprint network.

    1. Press and hold the Power key. Ignore any prompts or other screen changes.
    2. Continue holding the Power key until your HTC EVO 4G LTE turns off.
    3. Your device automatically turns back on.
    4. Test your phone to see if the issue is resolved.
  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 EVO 4G LTE 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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