How to Fix Weak Security on Wifi

That “Weak Security” warning usually isn’t your phone being dramatic—it’s telling you your Wi‑Fi network is using a security type that’s not considered safe. Most of the time, it comes up when the Wi‑Fi is using WEP, which is widely treated as not secure. The good news: you can fix it by changing your router settings to WPA2 (AES) or WPA3, then doing a clean reconnect on your device.

Below is one end-to-end path that takes you from “what does this mean?” to “my warning is gone,” including iPhone, Android, and MacBook steps.

What “Weak Security” Wi‑Fi means (and when WEP is involved)

When your phone or laptop shows a Weak Security message, it’s basically saying: “This Wi‑Fi network isn’t using modern Wi‑Fi protection.”

The common case is when your network uses WEP (Wired Equivalent Privacy). WEP is not considered secure. So if your router is set to WEP, your devices will often warn you.

Other networks can trigger the warning too, but WEP is the big one to check first. If you’re seeing this warning often—especially on multiple devices—it’s a strong hint your router’s security setting needs an update.

Check your Wi‑Fi security type: WEP vs WPA2 (AES) vs WPA3

Before you change anything, you want to know what your router is currently using. You can often find this on the device that’s warning you (Wi‑Fi details), or by checking your router settings.

Here’s the quick mental map:

• WEP: old and not considered secure. This is the one you want to get rid of.
• WPA2 (AES): a newer, solid option. “AES” is the encryption method paired with WPA2.
• WPA3: the newest option (if your router supports it). In most homes, this is the “better” choice when available.

If you’re not sure which one you’re using, don’t stress. The next step is going into your router and switching away from anything weak or old.

Fix it in your router settings: switch to WPA2-AES or WPA3

Router settings are where the real fix happens. The phone can’t “upgrade” the Wi‑Fi security by itself. Your router has to broadcast the network using WPA2 (AES) or WPA3.

What to look for in the router menu

On most routers, you’ll see something like Wireless settings or Wi‑Fi settings. Look for:

• Security type / Security mode
• Encryption
• Options such as WEP, WPA2, WPA2-PSK, WPA2 (AES), and WPA3

Step-by-step (router-first)

1. Log into your router.

Open a browser on a computer/phone connected to your Wi‑Fi (or use the router’s admin setup method if you already know it).

1. Find Wi‑Fi settings (sometimes called Wireless).
2. Locate the Security type (this is where WEP/WPA2/WPA3 show up).
3. Set it to one of these:

• WPA2 (AES), or
• WPA3 (if available)

1. Save/apply the changes.
2. Be ready for the Wi‑Fi to briefly drop. That’s normal when you change security.

If your router currently says something like WEP, switch it away from that. A router running WEP is exactly the kind of “weak security” scenario devices warn about.

Use the “best you can” rule

• If your router supports WPA3, choose it.
• If some devices complain (older devices sometimes can’t use WPA3), you can fall back to WPA2 (AES) so everything has a secure match.

Restart steps that help after changing security settings

After you change the router security type, do the two restarts people keep recommending—because they work.

Restart your device

• Turn Wi‑Fi off, then back on, or restart the device entirely.

Restart your router

• Unplug the router.
• Wait about 10–30 seconds.
• Plug it back in and wait for it to come fully online.

This clears old connection info so your device tries the new security setup instead of stubbornly reusing the old one.

Forget the network and reconnect (iPhone, Android, MacBook)

Changing router security often breaks the saved Wi‑Fi profile on your device. That’s why “Forget the Wi‑Fi network and rejoin it” is the next step in the troubleshooting loop.

iPhone: forget + reconnect

1. Open Settings → Wi‑Fi
2. Find your network name (SSID) and tap the info (i) button.
3. Tap Forget This Network
4. Rejoin the Wi‑Fi:

• Tap your network name
• Enter the password again

If the password hasn’t changed (it often doesn’t), you may still need to do this because the security type changed (like WEP → WPA2/WPA3).

Android: forget + reconnect

1. Go to Settings → Network & Internet (wording varies by brand)
2. Tap Wi‑Fi
3. Find your network name
4. Choose Forget (or Remove network)
5. Select the network again and enter the password

If you have an Android with multiple saved networks, double-check you remove the exact one that matches your home SSID.

MacBook: forget + reconnect

1. Click the Wi‑Fi icon in the top bar
2. Choose Settings (or System Settings)
3. Look for Wi‑Fi and your network
4. Remove/forget the network entry
5. Join it again and enter the password

On macOS, “it looks connected but still warns” is often a saved-profile mismatch. Forgetting forces a fresh handshake.

If you can’t connect: handle “Weak security WiFi not connecting”

Sometimes after you change router security, your device refuses to connect. Here’s the usual fix path—keep it in order:

1. Restart your device again.

Don’t skip this. It resets the Wi‑Fi connection process.

1. Restart the router again.

Especially if you made multiple changes and aren’t sure which ones took effect.

1. Forget the network again and reconnect.

Yes, again. Saved Wi‑Fi profiles can be sticky.

1. Make sure you picked the right password.

Security changes sometimes make people double-check the wrong stored password.

If it still won’t connect, consider this

• Your device might not like WPA3 (some older devices can’t handle it).
• If you’re aiming for WPA3 and you’re stuck, switch your router back to WPA2 (AES) and repeat the reconnect steps.

The goal is secure + compatible. In most homes, WPA2 (AES) is a great “works everywhere and stays safe enough” option.

How to change WPA2 to WPA3 (practical router settings to look for)

If your router is already on WPA2 (AES) and you want to move to WPA3, you’re looking for a setting that changes the security protocol/type.

What to look for in your router

In Wi‑Fi settings, find the current Security type. You might see choices like:

• WPA2-PSK (AES)
• WPA3 (or WPA3-SAE)
• Mixed mode (WPA2/WPA3)

Typical steps

1. Log into the router admin page.
2. Go to Wireless/Wi‑Fi settings.
3. Change Security type from WPA2 (AES) to WPA3 (or select the WPA3 option).
4. Save/apply.
5. Restart router + device.
6. Forget the Wi‑Fi and rejoin (iPhone/Android/MacBook steps above).

If mixed mode is available, that can help older devices connect while you still get the benefits of WPA3 where possible. If you don’t see it, don’t guess—just use what your router offers.

Is weak security Wi‑Fi dangerous on iPhone? What to do next

If your iPhone shows Weak Security, treat it as a “fix it soon” alert. The message is basically telling you your network isn’t using a security approach that’s considered safe.

So what should you do?

1. Change the router security to WPA2 (AES) or WPA3 (router-first).
2. Then restart your iPhone and the router.
3. Forget the network and reconnect.
4. After you’re back online, double-check that the warning is gone.

Also, if you have other people’s devices connected (smart TVs, game consoles, tablets), expect they may need to reconnect after the security change. That’s normal.

Quick checklist: confirm the warning is gone

Use this last pass to make sure you actually fixed it—not just “got connected again”:

• [ ] Your router’s Wi‑Fi security is set to WPA2 (AES) or WPA3 (not WEP).
• [ ] You restarted your router after saving the change.
• [ ] On your phone/computer, you forgot the network and joined it again.
• [ ] Your device no longer shows the Weak Security warning.
• [ ] Other home devices can still connect (and rejoin them if they don’t).

Once you confirm the warning is gone after reconnecting, go secure the rest of your home devices too—so everything is using the same updated Wi‑Fi settings.