How To Fix WiFi Won’t Turn On For Android Phones (2026 Guide)

If your Android phone’s WiFi toggle won’t turn on, is greyed out, or gets stuck on “turning on,” the cause is usually a software glitch, a rogue third-party app, or — less commonly — a damaged WiFi chip. This guide walks through every known fix, starting with the ones that solve it for most people.

Quick Fixes to Try First

Before diving into deeper troubleshooting, run through these fast checks. One of them solves the problem for roughly 80% of people.

Restart Your Phone

A standard restart clears minor software glitches that can freeze the WiFi toggle. Hold the Power button (or Power + Volume Down on newer phones), tap Restart, and check the WiFi switch once the phone boots back up.

If a normal restart doesn’t help, try a forced restart: hold Power + Volume Down together for 10–15 seconds until the screen goes black and the phone reboots on its own. This is the equivalent of pulling the battery on older phones.

Toggle Airplane Mode On and Off

This resets all radio connections — cellular, Bluetooth, and WiFi — without needing a full restart.

Swipe down from the top of the screen to open Quick Settings.
Tap the Airplane Mode icon to turn it on.
Wait 15–20 seconds.
Tap the Airplane Mode icon again to turn it off.
Try turning WiFi on.

On Samsung phones specifically, this fix has a high success rate because Airplane Mode forces a full re-initialization of the wireless hardware stack.

Turn Off Mobile Hotspot

This one catches a lot of people off guard. If your phone is currently broadcasting a mobile hotspot, the WiFi toggle will be greyed out because the WiFi radio is being used for the hotspot instead.

Samsung: Go to Settings → Connections → Mobile Hotspot and Tethering and turn it off.
Pixel/Stock Android: Go to Settings → Network & internet → Hotspot & tethering and disable it.

Once the hotspot is off, the WiFi toggle should become active again.

Check Available RAM

Low system memory can prevent WiFi from initializing. If your phone has less than roughly 45 MB of free RAM, the system may refuse to start the WiFi service. Close background apps, especially resource-heavy ones like games and video editors, then try WiFi again.

Go to Settings → Device Care → Memory (Samsung) or Settings → System → Developer Options → Running services (stock Android) to check current memory usage.

Intermediate Fixes

If the quick fixes above didn’t work, these steps address deeper software issues that commonly cause the WiFi toggle to fail.

Reset Network Settings

This clears all saved WiFi networks, Bluetooth pairings, and cellular APN settings back to factory defaults — but it does not delete your photos, apps, or personal data.

Samsung: Settings → General management → Reset → Reset network settings → Reset settings.
Pixel/Stock Android: Settings → System → Reset options → Reset Wi-Fi, mobile & Bluetooth.
Xiaomi/MIUI: Settings → Connection & sharing → Reset Wi-Fi, mobile networks, and Bluetooth.

You’ll need to re-enter WiFi passwords after this, so make sure you have them saved somewhere first.

Boot Into Safe Mode

Safe Mode disables all third-party apps and runs only the stock operating system. If WiFi works in Safe Mode, a third-party app is the culprit.

How to enter Safe Mode:

Press and hold the Power button until the power menu appears.
Press and hold the Power Off option on screen.
When prompted to reboot in Safe Mode, tap OK.
Once the phone boots, you’ll see “Safe Mode” in the bottom corner.

If WiFi works in Safe Mode:

The problem is a third-party app. Common offenders include VPN apps, network utilities, WiFi management tools, battery optimization apps, and recently installed apps. Uninstall suspicious apps one at a time, restarting normally after each removal, until WiFi works again.

To exit Safe Mode: Simply restart the phone normally.

Wipe the Cache Partition

The system cache stores temporary data that helps apps and services load faster, but it can become corrupted — especially after a system update — and prevent WiFi from working.

How to wipe cache partition (Samsung):

Power off the phone completely.
Press and hold Volume Up + Power (on older Samsung phones with a Home button, hold Volume Up + Home + Power).
When the Samsung logo appears, release all buttons.
Use the Volume buttons to navigate to Wipe cache partition.
Press Power to confirm.
Select Yes and press Power.
Select Reboot system now.

Pixel/Stock Android: Stock Android doesn’t have a cache partition wipe option in recovery on newer models. Instead, go to Settings → Storage → Cached data and clear it, or use the Reset app preferences option under Settings → System → Reset options.

This does not delete personal data — only temporary system files.

Update or Roll Back System Software

A buggy system update is one of the most common causes of WiFi suddenly refusing to turn on. Android community forums are full of reports where a specific update broke WiFi for entire device models.

Check for updates: Settings → Software update → Download and install. Manufacturers often release hotfix updates within weeks of a WiFi-breaking update.
If a recent update caused it: If your phone supports it, you may be able to roll back to the previous version through the manufacturer’s flash tool (Samsung’s Odin, Google’s Android Flash Tool, Xiaomi’s MiFlash). This is advanced and varies by device.

Advanced Fixes

Only attempt these if everything above failed. These steps carry more risk and may void warranties.

Clear WiFi Service Data

Sometimes the WiFi framework’s own cached data gets corrupted. Clearing it forces a fresh initialization.

Go to Settings → Apps.
Tap the three-dot menu → Show system apps.
Find and tap Wi-Fi (or WifiStateMachine or com.android.wifi.resources — the exact name varies by manufacturer).
Tap Storage → Clear cache and then Clear data.
Restart the phone.

On some Samsung devices, you may also want to clear data for Wi-Fi Direct and Nearby device scanning services.

Manually Rename the WiFi Configuration File (Root Required)

If your phone is rooted, a corrupted wpa_supplicant.conf file can prevent WiFi from initializing entirely.

Open a root file manager (like Solid Explorer or Root Explorer).
Navigate to /data/misc/wifi/.
Rename wpa_supplicant.conf to wpa_supplicant.bak.
Restart the phone.

The system will generate a fresh configuration file on boot. You’ll lose all saved WiFi networks but the toggle should work again. Do not delete the original file — rename it so you can restore it if needed.

Factory Reset

A full factory reset returns the phone to its out-of-box state and is the last software fix to try before considering hardware failure.

Back up your data first. A factory reset deletes everything: apps, photos, messages, accounts, settings — all of it.

From Settings: Settings → General management → Reset → Factory data reset → Reset.
From Recovery Mode (if you can’t access Settings): Power off → hold Volume Up + Power → select Wipe data/factory reset → confirm → Reboot system now.

If WiFi still does not work after a factory reset, the problem is almost certainly hardware.

When It’s a Hardware Problem

If every software fix fails — including a complete factory reset — the WiFi chip itself is likely damaged. Here are the signs that point to hardware failure:

WiFi toggle is permanently greyed out even after factory reset.
Both WiFi and Bluetooth fail simultaneously. These share the same wireless module on most Android phones, so a dead combo chip kills both.
WiFi briefly turns on then immediately shuts off, especially when the phone gets warm.
The MAC address shows as 02:00:00:00:00:00 in Settings → About phone → WiFi MAC address. This default address means the system can’t read the WiFi chip.

Repair Options

WiFi chip replacement typically costs $50–$100 at an independent repair shop. The chip is soldered to the motherboard, so this requires professional micro-soldering equipment.

Before paying for a repair, check these first:

Warranty status: Samsung offers 1-year standard warranty; Google Pixel phones include 1 year as well. Contact the manufacturer:
Samsung: 1-800-726-7864 or samsung.com/us/support
Google: support.google.com/pixelphone
Xiaomi: service.mi.com
Carrier insurance: Verizon, AT&T, and T-Mobile all offer device protection plans that cover hardware failure. Check your account.
Credit card extended warranty: Many credit cards extend manufacturer warranties by an additional year.

If the phone is several years old and out of warranty, the repair cost may not be worth it compared to upgrading. In that case, consider using a USB WiFi adapter with an OTG cable as a temporary workaround — they cost about $10–$15 and work with many Android devices.

Summary: WiFi Fix Checklist

Step	Fix	Risk Level	Data Loss?
1	Restart / forced restart	None	No
2	Toggle Airplane Mode	None	No
3	Turn off Mobile Hotspot	None	No
4	Free up RAM	None	No
5	Reset network settings	Low	WiFi passwords only
6	Boot into Safe Mode	None	No
7	Wipe cache partition	Low	No
8	Update system software	Low	No
9	Clear WiFi service data	Low	WiFi settings
10	Rename wpa_supplicant.conf (root)	Medium	Saved networks
11	Factory reset	High	Everything
12	Professional hardware repair	N/A	N/A

Start at step 1 and work down. Most people never need to go past step 7.