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10 Tech How-To

How to Clear Bluetooth Cache on LG G5

Guide 10-42574 · Updated · Step by step

If your LG G5 is having trouble pairing with a car, speaker, or other device, a corrupted Bluetooth cache is often the culprit. Clearing the cache forces the phone to rebuild its Bluetooth connection data from scratch, which usually fixes pairing failures, dropped connections, and audio glitches. You don’t need any special tools—just the phone itself. This guide walks you through the exact steps.

What You’ll Need

  • Your LG G5 (obviously)
  • About 2 minutes of time
  • No computer or cables required

Step-by-Step

  1. Unlock your LG G5 and go to the Home screen. Swipe up from the bottom or press the Home button to make sure you’re on the main screen.
  2. Open the Apps drawer. Swipe up from the bottom of the screen again, or tap the Apps icon (usually a grid of dots) at the bottom center.
  3. Tap “Settings.” It’s the gear icon, usually in the top-right corner of the Apps drawer.
  4. Scroll down and tap “General.” This is the tab with a gear icon at the top of the Settings screen. You’ll see a list of categories.
  5. Tap “Apps & notifications.” On some versions of the LG G5’s software, this may be labeled simply “Apps.”
  6. Tap “App info.” If you don’t see this option, skip to the next step—some versions take you straight to the app list.
  7. Scroll through the list of apps and find “Bluetooth.” It’s usually near the top, but you may need to scroll. Tap on it.
  8. Tap “Storage.” This option is typically located near the top of the app’s info page.
  9. Tap “Clear Cache.” A small confirmation dialog may appear—tap “OK” or “Delete” to confirm. Do not tap “Clear Storage” or “Clear Data,” as that will erase all your paired devices and Bluetooth settings.
  10. Go back to the Home screen. Press the Home button or swipe up.
  11. Reboot your phone. Press and hold the Power button, then tap “Restart.” If your G5 has a removable battery, you can also just pull the battery out and put it back in—that’s a hard reset that also clears temporary glitches.
  12. After the phone restarts, try pairing your Bluetooth device again. Go to Settings > Bluetooth, turn Bluetooth on, and attempt to connect as you normally would.

Common Mistakes

  • Tapping “Clear Storage” instead of “Clear Cache.” This is the most common error. Clear Storage wipes all your paired devices, and you’ll have to re-pair everything from scratch. It’s not a disaster, but it’s more work.
  • Skipping the reboot. Clearing the cache doesn’t always take effect until the phone restarts. If you skip this step, the problem may persist.
  • Clearing the wrong app’s cache. Make sure you tap “Bluetooth” (the system app) and not “Bluetooth MIDI Service” or “Bluetooth Share.” The latter is actually a system component that also holds Bluetooth data, but clearing it can cause more issues. Stick to “Bluetooth.”
  • Not forgetting the paired device. If you clear the cache and still have trouble, you may need to “Forget” the problematic device in Bluetooth settings and then pair it again. This is a separate step, but often necessary.

Tips

  • Clear the cache regularly. If you frequently switch between many Bluetooth devices, the cache can build up. Doing this every few months can prevent issues.
  • Use Safe Mode to test. If Bluetooth problems persist after clearing the cache, boot into Safe Mode (press and hold the Power button, then long-press “Power off” and confirm). If Bluetooth works fine in Safe Mode, a third-party app is interfering. Uninstall recently downloaded apps to find the culprit.
  • Check for system updates. LG has released several updates for the G5 that improved Bluetooth stability. Go to Settings > General > About phone > Update Center to check for updates.
  • Back up your paired devices. Before clearing the cache, write down the names of your paired devices if you have many. You’ll need to re-pair them after clearing storage (if you accidentally do that).

Troubleshooting

If clearing the cache doesn’t fix the issue:

  • Try clearing the Bluetooth Share cache. Go to Settings > Apps > App info > tap the three-dot menu (top right) > “Show system” > find “Bluetooth Share” and clear its cache. This is a deeper system app that also stores Bluetooth data.
  • Reset network settings. Go to Settings > General > Backup & reset > Network settings reset. This will reset Wi-Fi, Bluetooth, and mobile data settings. You’ll need to re-enter Wi-Fi passwords, but it often resolves stubborn Bluetooth issues.
  • Factory reset. As a last resort, back up your data and perform a factory reset (Settings > General > Backup & reset > Factory data reset). This will return the phone to its original state and should eliminate any software glitches.
  • Check the other device. The problem might not be your G5. Try pairing the Bluetooth device with another phone. If it fails there too, the issue is with the device itself (e.g., low battery, out of range, or a hardware fault).
  • Battery pull. If your G5 has a removable battery (it does), turn off the phone, remove the battery, wait 30 seconds, and reinsert it. This is a more thorough reset than a simple reboot and can clear stubborn memory issues.

Frequently Asked Questions

Q: Will clearing the Bluetooth cache delete my paired devices?
A: No, clearing the cache only removes temporary files. Your paired devices list remains intact. Clearing “Storage” or “Data” would delete them.

Q: Why does my LG G5 keep forgetting Bluetooth devices?
A: This is often caused by aggressive battery optimization. Go to Settings > General > Battery & power saving > Battery usage > tap the three-dot menu > “Optimize battery usage” and set Bluetooth to “Don’t optimize.”

Q: Can I clear the Bluetooth cache without going through Settings?
A: No, there’s no shortcut. You must go through Settings as described above.

Q: How often should I clear the Bluetooth cache?
A: Only when you experience problems. There’s no need to do it regularly unless you have recurring issues.

Q: Will this fix audio lag or stuttering?
A: Yes, corrupted cache data can cause audio glitches. Clearing it often resolves these issues. If not, try restarting the Bluetooth device itself.

Q: What if the Bluetooth option is grayed out in Settings?
A: This usually indicates a hardware issue or a system crash. Try rebooting the phone first. If it persists, you may need to perform a factory reset or contact LG support.

Related

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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