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Troubleshoot issues related to Bluetooth and your Lumia 635

Last Updated: Aug 03, 2016

This article helps you troubleshoot Bluetooth issues on your Lumia 635

You may have Bluetooth® issues if your Lumia 635 is unable to:

  • Pair with a Bluetooth device
  • Connect to a Bluetooth device
  • Recognize a Bluetooth device

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. Does your phone you're pairing with support the same Bluetooth protocols as your Lumia 635?

    Refer to the Bluetooth device's user manual for compatibility.

    Your Lumia 635 is compatible with Bluetooth v 4.0 and supports:

    • Advanced Audio Distribution Profile (A2DP)
    • Audio/Video Remote Control Profile (AVRCP)
    • Generic Attribute Profile (GATT)
    • Hands-Free Profile (HFP)
    • Headset Profile (HSP)
    • Object Push Profile (OPP)
    • Phone Book Access Profile (PBAP)

    If the manual doesn't list any of these protocols, your Lumia 635 is unable to connect to that Bluetooth device.

  2. Is Bluetooth enabled on both devices?

    Bluetooth may be turned off on either the Lumia 635 or the other Bluetooth device. Be sure Bluetooth is enabled on both devices.

    Turn your Lumia 635 Bluetooth on.

  3. Is the Bluetooth device in range?

    The Bluetooth communication range for most devices, including your Lumia 635, is about 30 feet. Be sure your phones are in range.

  4. Perform a soft reset.

    A soft reset deletes any temporary files that may be causing the issue.

    1. Turn your phone off.
    2. Remove the battery. After 10 seconds, reinsert the battery.
    3. Turn your phone back on.
  5. Remove the pairing and re-pair the Bluetooth device.

    Removing the pairing, restarting your Lumia 635, and then re-pairing the Bluetooth device refreshes and updates your connection.

    1. Remove the pairing:
      1. Swipe down from the top of the screen to access the action center.
      2. Tap ALL SETTINGS.
      3. Scroll to and tap Bluetooth.
      4. Tap and hold the paired Bluetooth device.
      5. Tap delete.
    2. Restart your Lumia 635:
      1. Press and hold the Power key for 10 seconds.
    3. Re-pair the Bluetooth device:
    4. Pair with a Bluetooth device.

Note: To optimize device performance, be sure your Lumia 635 is running the most recent device software. Check for software updates.

If you're still having issues, try the Sprint Community pages.

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