Why your phone won't connect to Wi-Fi even if the password is entered correctly: A full breakdown of the reasons

Are you sure you're entering the correct Wi-Fi password, but your phone stubbornly refuses to connect? This situation is familiar to many: the connection indicator spins endlessly, a message appears saying "Saved, WPA/WPA2 protected" or "Authentication failed," and the internet still won't connect. In 80% of cases, the problem can be resolved within 5 minutes, but to do so, you need to pinpoint the source.

In this article we will look at all possible reasonsWhy your phone won't connect to Wi-Fi despite the correct password—from trivial input errors to hidden router settings and smartphone software glitches. You'll get step-by-step instructions For Android And iPhone, a table of error code decoding, and a quick diagnostic checklist. And if the problem goes deeper, learn to distinguish hardware from software issues.

Let us warn you right away: In 30% of cases, it's not the phone that's at fault, but the router—its settings may have gotten lost after a firmware update or a change of provider.Therefore, start by checking the device distributing Wi-Fi, even if other devices connect normally.

1. Checking the obvious: password and basic settings

Yes, it sounds trivial, but 60% of support requests are resolved at this stage. Users are confident that they are entering the password correctly, but in reality:

• 🔑 Character case. Password WiFi_123 And wifi_123 - different things. On iPhone The keyboard may capitalize the first letter by default.
• 📱 Autocorrect. Android/iOS sometimes correct characters (for example, 0 on O). Disable autocorrect in keyboard settings.
• 🔄 Old PasswordIf the router was recently rebooted or reset, the password may have reverted to the factory default (usually found on a sticker on the bottom).
• 📡 Hidden networkIf the Wi-Fi name does not appear in the list, you need to add it manually (on Android: Settings → Wi-Fi → Add network).

How to check your password without errors:

1. Open Notebook (or any text field) and enter the password manually.
2. Copy it and paste it into the Wi-Fi connection field.
3. If it doesn't help, enter the password manually, turning off autocorrect.

⚠️ Attention: On some routers (for example, TP-Link Archer C6) After a reset, the password is reset to a randomly generated one, not the factory default. It can be viewed in the router's web interface at 192.168.0.1 or 192.168.1.1.

2. Router errors: why other devices connect, but your phone doesn't

If your laptop or tablet successfully connects to Wi-Fi, but your phone doesn't, the problem may lie in router settingsHere are the most common scenarios:

• 🔒 MAC address filteringYour router may have a "whitelist" of devices enabled, and your phone is not on it.
• 📶 Connection limitSome routers (especially those from ISPs) block new devices after exceeding a limit (for example, 10 devices).
• 🔄 Incompatible Wi-Fi standardThe phone may not support it. Wi-Fi 6 (802.11ax), if the router only works in this mode.
• 🛡️ IP blockingIt's rare, but it does happen: the router assigns the phone an "incorrect" IP address (for example, from a different range).

How to check your router settings:

1. Connect to the router from another device (PC, tablet).
2. Open your browser and type 192.168.0.1 or 192.168.1.1 (the address may differ - see the sticker on the router).
3. Check the sections:
   • Wireless → Wireless MAC Filter (MAC filtering)
   • DHCP → DHCP Client List (list of connected devices)
   • Wireless → Wireless Settings (Wi-Fi operating mode: 802.11b/g/n/ac/ax)

Disable MAC filtering|

Increase connection limit (if any)|

Switch Wi-Fi mode to 802.11n (universal)|

Reboot the router (using the button on the case) -->

3. Phone problems: from software glitches to hardware malfunctions

If the router is configured correctly and other devices connect without problems, the source of the problem is in the phoneLet's consider the possible reasons:

• 📱 Wi-Fi module failureThis often happens after the phone has fallen or the firmware has been updated.
• 🔄 IP/DNS conflictThe phone may "remember" old network settings that are now irrelevant.
• 🛠️ Firmware error. Especially relevant for Android after major updates (for example, with Android 12 on Android 13).
• 🔋 Energy savingUltra power saving or battery optimization modes may disable Wi-Fi in the background.

Diagnosis by symptoms:

How to reset network settings on Android:

1. Go to Settings → System → Reset → Reset Wi-Fi, mobile network, and Bluetooth settings.
2. Confirm the reset. The phone will reboot.
3. Try connecting again.

For iPhone:

1. Open Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
2. Enter your device password.
3. After rebooting, try connecting to Wi-Fi.

What to do if resetting doesn't help?

If the problem persists after resetting network settings, try:

1. Update your phone's firmware (settings → software update).

2. Roll back the update (if the problem appeared after the upgrade).

3. Check your phone at a service center — the Wi-Fi module may be faulty (especially if the phone has been dropped or got wet).

4. Security Protocol Conflicts: WPA2 vs. WPA3

Many modern routers support WPA3 — a new security standard, but not all phones work with it correctly. This is especially true for:

• Old models Android (to Android 10).
• Some iPhone (For example, iPhone 6/6S after upgrading to iOS 15+).
• Phones with custom firmware (for example, LineageOS).

How to check and change the security type:

1. Go to the router's web interface (192.168.0.1 or 192.168.1.1).
2. Go to the section Wireless → Wireless Security.
3. Change it WPA3-Personal on WPA2-Personal (or WPA2/WPA3 Mixed for compatibility).
4. Save the settings and reboot the router.

⚠️ Attention: Some providers (eg Rostelecom or Beeline) block the ability to change the security type in rented routers. In this case, please contact support and request that the router be switched to WPA2.

5. IP Addressing Issues: DHCP vs. Static Settings

If your phone connects to Wi-Fi but the internet doesn't work (network icon with an exclamation mark), the problem may be assigning an IP addressThe router distributes addresses according to the protocol. DHCP, but sometimes this process gets confused.

How to check:

• On Android: Settings → Wi-Fi → [your network] → Manage network → Show advanced settings. Look at the field IP address.
• On iPhone: Settings → Wi-Fi → (i) next to the network → IP address.

If the IP address starts with 169.254.x.x - this is a sign of DHCP failure. Solutions:

1. Reboot your router (Pull out power for 30 seconds).
2. Assign a static IP manually:
   • On Android: in the network settings, select Static IP and enter the address (for example, 192.168.0.100, if the router 192.168.0.1).
   • On iPhone: Settings → Wi-Fi → (i) → Configure IP → Manually.

Change DNS on 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).

6. Impact of third-party applications and VPNs

Few people know, but Some apps may block your Wi-Fi connection., even if you don't actively use them. The culprits:

• 🔒 VPN clients (For example, NordVPN, ProtonVPN). They can redirect all traffic through their servers, causing Wi-Fi to "not work."
• 🛡️ Antiviruses (For example, Kaspersky, Avast). Some of them block "suspicious" networks.
• 📱 Apps for saving traffic (For example, Datally from Google).
• 🔄 Launchers and shells (For example, Nova Launcher, MIUI on Xiaomi). They may interfere with the operation of network services.

How to check:

1. Start your phone in Safe Mode (on Android: hold down the power button → "Safe mode").
2. Try connecting to Wi-Fi. If it works, third-party software is to blame.
3. Disable VPN, antivirus, and other suspicious applications one by one.

For iPhone:

• Open Settings → VPN and disconnect active connections.
• Check it out Settings → Privacy → Analytics and Improvements - Some applications may block networks through this section.

7. Hardware malfunctions: when it's time to visit a service center

If none of the previous methods helped, the problem may be hardwareSigns of a faulty Wi-Fi module:

• 📵 The phone can't be found not a single one Wi-Fi network (even public ones).
• 🔄 Wi-Fi turns on, but immediately turns off (cyclic reboot of the module).
• 🔥 The phone overheats when trying to connect.
• 💥 The problem appeared after a fall, getting wet, or repair.

What you can do yourself:

• Check your phone on another router (for example, in a cafe or at a friend's place).
• Connect to Wi-Fi via USB debugging (if the phone is detected as a network adapter on the PC).
• Try it alternative firmware (For example, LineageOS For Android), if the warranty has expired.

⚠️ Attention: If your phone is under warranty, do not disassemble it or attempt to flash it yourself! Contact an authorized service center. The cost of repairing a Wi-Fi module ranges from 1,500 to 5,000 rubles, depending on the model.

8. Regional restrictions and provider features

In rare cases, the problem may be related to provider policy or regional settings. For example:

• 🌍 Geo-blockingSome providers (especially in hotels or airports) block connections to phones with certain IMEI numbers.
• 📡 MAC address bindingThe provider may allow network access only to registered devices.
• 🔒 Double authenticationSome networks (for example, universities) require additional authorization through a browser.

How to check:

1. Try connecting to a different network (such as a mobile hotspot).
2. If the connection requires authorization through a browser, open any website (for example, google.com) - a login window should appear.
3. Call your provider and find out if there are any restrictions on the number of devices or types of connections.

⚠️ Attention: Some countries (such as China) have restrictions on the use of certain Wi-Fi standards. If you're traveling, check local regulations or use a VPN.

FAQ: Frequently Asked Questions

My phone connects to Wi-Fi, but websites won't open. What's wrong?

This is a typical problem with DNS servers. Try:

1. In your Wi-Fi network settings, change DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).
2. Disable your VPN if it is enabled.
3. Check if your antivirus is blocking network access.

After updating Android, my phone stopped connecting to Wi-Fi. What should I do?

Updates often break compatibility with some routers. Solutions:

• Reset network settings (Settings → System → Reset → Reset Wi-Fi, mobile networks, and Bluetooth).
• Roll back the update (if possible) or wait for a patch.
• Change the router security type WPA3 on WPA2.

My phone connects to Wi-Fi, but the speed is very slow. Why?

Reasons for low speed:

• The router is operating on a congested channel (change the channel in the settings to 1, 6 or 11 for 2.4 GHz).
• The phone is connected to 2.4 GHz instead of 5 GHz (if the router is dual-band).
• Restriction from the provider (check your tariff).
• Background apps are consuming traffic (check in Settings → Traffic).

Is it possible to connect to Wi-Fi without a password if I forgot it?

Yes, there are several ways:

1. Check the password in your router settings (192.168.0.1 or 192.168.1.1, chapter Wireless Security).
2. If you have Windows- On a PC connected to this Wi-Fi, run the following in the command line:

   netsh wlan show profile name="NETWORK_NAME" key=clear

   The password will be in the line Key Content.

3. On Mac open Bunch of keys, find the network name and look at the password.

If nothing helps, reset the router to factory settings (button Reset on the body).

Why won't my iPhone connect to Wi-Fi, but my Android phones can?

This is a typical problem. iPhone with some routers. Reasons:

• Incompatibility with WPA3 (change to WPA2 in the router settings).
• Date and time error (check in Settings → General → Date & Time - "Automatic" must be enabled.
• Network settings failure (drop them: Settings → General → Transfer or reset → Reset network settings).
• MAC address blocking (add your MAC iPhone to the list of allowed devices in the router).