WiFi Not Working on LG G4? Solved

If your LG G4 won’t connect to Wi-Fi, keeps dropping the signal, or shows a saved network but never connects, the fix usually involves clearing the network cache, adjusting the router’s security settings, or performing a factory reset. This article walks you through the most effective solutions, from quick software resets to deeper router-side changes, so you can get your G4 back online.

Why the LG G4 Has Wi-Fi Problems

The LG G4 was released in 2015 and runs Android 5.1 (Lollipop), upgradeable to Android 7.0 (Nougat). While it’s an older device, its Wi-Fi hardware supports 802.11 a/b/g/n/ac on both 2.4 GHz and 5 GHz bands. Most connection issues stem from one of three things:

Software glitches – a temporary error in the Wi-Fi stack that a simple toggle or reboot clears.
Router compatibility – the G4’s older Wi-Fi driver may not handle certain modern router settings like WPA3 or channel widths above 80 MHz.
Corrupted network data – saved network profiles or cache files that have become stale or misconfigured.

Understanding which category your problem falls into helps you choose the right fix quickly.

Quick Fixes to Try First

Start with these low-risk steps. They take less than a minute each and resolve a surprising number of cases.

Toggle Wi-Fi off and on – pull down the notification shade, tap the Wi-Fi icon to turn it off, wait 10 seconds, then turn it back on.
Restart the phone – press and hold the power button, tap Restart, and wait for the phone to boot completely.
Restart the router – unplug the router’s power, wait 30 seconds, plug it back in, and let it fully boot (usually 1–2 minutes).
Forget and re-add the network – go to Settings → Wi-Fi, long-press the network name, tap Forget network, then tap the network again and enter the password.

If none of these work, move on to the more targeted solutions below.

Clear the Wi-Fi Cache and Data

Android stores temporary files for Wi-Fi that can become corrupted. Clearing them forces the system to rebuild the data from scratch.

Go to Settings → Storage → Internal storage.
Tap Miscellaneous files (or Other on some versions).
Look for a folder named Wi-Fi or wifi – you can delete its contents. If you don’t see it, skip this step.
Next, go to Settings → Apps → Show system apps (three-dot menu).
Find Wi-Fi (or Wi-Fi Manager), tap it, then tap Storage, and finally Clear cache and Clear data.

After clearing, you’ll need to re-enter your Wi-Fi password, so have it handy. This process does not delete any personal files or apps.

Adjust Router Settings for Better Compatibility

Modern routers often default to security and channel settings that are too new for the G4’s Wi-Fi chip. Log into your router’s admin page (usually via a browser at an address like 192.168.1.1 or 192.168.0.1) and try these changes:

Set security to WPA2-PSK (AES) – avoid WPA3 or WPA2/WPA3 mixed mode. The G4 does not support WPA3.
Disable 802.11ax (Wi-Fi 6) mode – if your router offers a “Wi-Fi 6” or “AX” mode, switch to “Mixed” or “Legacy” so it also broadcasts 802.11ac or 802.11n.
Reduce channel width to 20/40 MHz – on the 2.4 GHz band, set channel width to 20 MHz only. On 5 GHz, set it to 40 MHz instead of 80 or 160 MHz.
Change the channel – try a fixed channel (e.g., 1, 6, or 11 on 2.4 GHz) instead of “Auto”.
Disable band steering – if your router has a feature that combines 2.4 and 5 GHz into one SSID, disable it and use separate SSIDs for each band.

These changes are safe and reversible. After each change, restart the router and try connecting your G4.

Use a Static IP or Change DHCP Settings

Sometimes the G4 fails to obtain an IP address from the router’s DHCP server, which results in “Connected, no internet” or endless “Obtaining IP address” messages. You can work around this by assigning a static IP on the phone.

Go to Settings → Wi-Fi and long-press the network.
Tap Modify network → Show advanced options.
Change IP settings from DHCP to Static.
Enter an IP address like 192.168.1.50 (make sure it’s outside the router’s DHCP range, usually 100–200).
Set the Gateway to your router’s IP (e.g., 192.168.1.1).
Set Network prefix length to 24 (for a typical home network).
Set DNS 1 to 8.8.8.8 and DNS 2 to 8.8.4.4 (Google’s public DNS).

If you’re not sure about the gateway or prefix, check another device on the same network – its settings will show the correct values. This fix is especially useful for public or workplace networks that restrict DHCP.

When to Factory Reset the Phone

A factory reset should be your last resort because it erases all data on the phone. But if Wi-Fi is completely broken across multiple networks, and you’ve tried the steps above, a reset often clears a deep software conflict. Before you do it, back up your photos, contacts, and any files you need.

Go to Settings → Backup & reset.
Tap Factory data reset.
Read the warning and confirm.

After the phone reboots, set it up as new and test Wi-Fi before installing any apps. If Wi-Fi still fails after a factory reset, the problem is likely hardware – the Wi-Fi antenna or chip may be damaged. In that case, you’d need a repair shop, but that’s rare compared to software issues.

Frequently Asked Questions

Why does my LG G4 keep saying “Saved, Secured” but won’t connect?

This usually means the phone saved the network profile but can’t complete the handshake with the router. Try forgetting the network and re-entering the password. If that doesn’t work, reboot the router and the phone, then try again. Also check that the router isn’t set to a security mode the G4 doesn’t support, like WPA3.

Can the LG G4 connect to 5 GHz Wi-Fi?

Yes, the G4 supports 5 GHz networks (802.11a/ac). However, if your router broadcasts a combined SSID for both bands, the phone may prefer 2.4 GHz because it has a stronger signal. To force 5 GHz, set up a separate SSID for the 5 GHz band in your router settings.

Will a new router fix my G4’s Wi-Fi issues?

Not necessarily. A new router might default to settings that are incompatible with the G4, such as WPA3 or 802.11ax mode. If you get a new router, configure it to broadcast in legacy mode (802.11n/ac) and use WPA2 security for the best compatibility with older devices like the G4.

My G4 connects to Wi-Fi but has no internet. What should I do?

First, check if other devices on the same network have internet – if not, the issue is with the router or ISP. If other devices work, try forgetting the network and reconnecting. Also try setting a static IP and DNS as described above, because the G4 sometimes fails to receive DNS settings correctly.

Is there a way to update the Wi-Fi driver on the LG G4?

There is no separate driver update for Wi-Fi. Driver updates come with system updates. The G4’s last official update was Android 7.0 (Nougat), so if you’re on that version, you have the latest drivers LG released. If you’re on an older version, check for updates in Settings → About phone → Update Center.

Does a case affect Wi-Fi signal on the G4?

Yes, a metal case or a case with metallic components can block or weaken Wi-Fi signals. If you’re using a metal bumper or a case with metal accents, try removing it and see if the signal improves. Plastic or silicone cases generally don’t interfere.

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

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