My phone has no Wi-Fi connection, but my computer is connected: what should I do?

The situation is familiar to many: the router distributes the internet, the laptop or desktop PC is connected to the network without problems, but the smartphone stubbornly refuses to find Wi-Fi. Or it connects, but the page won't load, and an exclamation point appears next to the network icon. Is the problem the phone, the router, or the provider? And why is the problem so specific? Wi-Fi doesn't work on my phone, but it functions properly on the computer?

In practice, such cases account for tens of percent of all support requests. And in 90% of cases, the culprit isn't a malfunction, but rather settings, protocol conflicts, or simple user errors. In this article, we'll look into it. all possible reasons — from the trivial (disabled Wi-Fi on your phone) to the more exotic (IP address conflicts due to a VPN on your PC). We'll also provide a quick diagnostic checklist and a table of typical smartphone connection errors.

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1. Checking the basic settings: what could have gone wrong?

Start with the obvious. Often the problem lies in the little things that users don't notice. For example, Android Power saving mode may automatically turn off Wi-Fi when the screen goes dark. Or iPhone The "Auto-connect to network" function is enabled, but the router is not included in the priority list.

Here's what you need to check first:

• 📱 Is Wi-Fi turned on on your phone? Scroll down the notification shade or go to Settings → Wi-FiOn . iOS The network icon should be highlighted in blue.
• 🔄 Is Airplane Mode turned off? It blocks all wireless modules, including Wi-Fi. Samsung Galaxy And Xiaomi Sometimes a bug occurs where the mode turns on by itself after an update.
• 🔋 Energy saving doesn't cut off the network? On Android 10+ go to Settings → Battery → Power saving mode and check if Wi-Fi is disconnecting in the background.
• 📶 Does the phone "see" the network? If your router is not in the list of available networks, the problem is with the coverage area or hidden network settings (SSID).

If everything is turned on but there is no connection, proceed to the next step. If the phone "sees" the network but does not connect, try forget the network (on Android: click on the network name → “Delete” / “Forget”; iPhone: tap the "i" next to the network name → "Forget this network") and enter the password again.

2. IP address conflict: Why can't my phone access the network?

One of the most common reasons why Wi-Fi doesn't work on my phone, but it works on my computer. - conflict IP addresses on the local network. This happens when the router assigns the phone an address that's already taken by another device (for example, the same PC). Or when the smartphone is manually assigned a static IP address that's not in the router's DHCP range.

How does this manifest itself?

• The phone connects to the network, but the internet does not work (Wi-Fi icon with an exclamation mark).
• In the network settings on the phone, the status is “Connected, no internet access”.
• On PC, everything works stably.

Solutions:

1. Reboot your router. This will reset the DHCP table and force devices to request new IP addresses.
2. Check the IP settings on your phone.
   • On Android: Settings → Wi-Fi → [your network] → Advanced → IP settings → select DHCP (auto).
   • On iPhone: Settings → Wi-Fi → [your network] → Configure IP → Auto.

Change the DHCP range on the router. Go to the router's web interface (usually 192.168.0.1 or 192.168.1.1), find the section LAN or DHCP and expand the address pool (for example, with 192.168.0.100-199 to 192.168.0.100-200).

How to find out the IP address of a phone?

On Android: Settings → About phone → General information → Status → IP addressOn iPhone: Settings → Wi-Fi → [your network] → IP address (to the right of the network name).

If the problem persists after resetting the IP, try manually assigning an address to the phone. out of DHCP rangeFor example, if a router distributes addresses with 192.168.0.100 By 192.168.0.199, write on your phone 192.168.0.99 (subnet mask 255.255.255.0, gateway - router IP, DNS - 8.8.8.8 And 8.8.4.4).

3. Incompatibility of Wi-Fi standards: 2.4 GHz vs. 5 GHz

Many modern routers operate in two ranges: 2.4 GHz (long-distance, but slow and congested) and 5 GHz (fast, but with a smaller coverage area). If your phone does not support 5 GHz (relevant for older models) Samsung Galaxy J, Xiaomi Redmi 4 etc.), it simply won't see the network. A computer connected via cable or a 5 GHz adapter will work without any issues.

How to check:

• 🔍 Check the name of your network in the list of available Wi-Fi networks. If there are two networks with the same name, but one has a suffix _5G or 5GHz - this is the second range.
• 📱 Find out if your phone supports 5 GHz. To do this, simply look at the model specifications on the manufacturer's website or in Settings → About phone → Model.

Solutions:

• 🔄 Connect your phone to a 2.4 GHz network. If the router distributes both networks under the same name (SSID), try separating them in the router settings (in the section Wi-Fi or Wireless network).
• 📡 Change the 2.4 GHz channel. In densely populated areas, channels are congested, and your phone may not be able to break through the interference. Select a channel in your router settings. 1, 6 or 11 (they do not intersect).
• 🔧 Update your router firmware. Older versions of software may not handle requests from smartphones correctly, especially on Android 12+.

Check if your phone sees both networks (2.4 GHz and 5 GHz)|

Make sure your phone supports 5GHz (if you are trying to connect to it)|

Separate the networks in the router settings (give them different names)|

Change the 2.4 GHz channel to 1, 6 or 11|

Update your router firmware-->

If your phone is older than 2018, there's a good chance it doesn't support modern standards. 802.11ac (Wi-Fi 5) or 802.11ax (Wi-Fi 6). In this case, the only solution is to replace the router with a model that supports older protocols (802.11n) or buying a new smartphone.

4. Problems with router settings: what could have gone wrong?

Sometimes it's not the phone that's at fault, but the router itself. For example, if it's turned on MAC address filter, and your smartphone's address is not whitelisted. Or if activated client isolation mode (AP Isolation), which blocks communication between devices on a local network.

Typical router settings that can interfere with your phone:

How can I check these settings?

1. Open the router's web interface (the address is usually on a sticker on the back).
2. Log in (the default login and password are often admin/admin).
3. Go to the section Wireless (Wireless network) or Security (Safety).
4. Check the parameters from the table above.

If you recently changed your Wi-Fi password on your computer, make sure it's also applied to your phone. Routers sometimes retain old settings for certain devices, which can lead to authentication conflicts.

5. Failures in the firmware of the phone or router

Software errors are a common cause of intermittent Wi-Fi issues. For example, after an update Android 13 on some models Samsung And OnePlus A bug appears when connecting to encrypted networks. WPA3Or, after updating the firmware, the router begins to "lose" devices with certain MAC addresses.

Signs of a software failure:

• 🔄 Wi-Fi connects and disconnects by itself.
• 📵 The phone sees the network, but can't connect to it (it says "Authentication..." and drops the connection).
• 🔧 The problem appeared after updating the OS on the phone or the router firmware.

What to do:

• 📱 Update the OS on your phone. Go to Settings → System → Software Update and install the latest patches. iPhone This Settings → General → Software Update.
• 🔄 Roll back the router update. If the problem appeared after a firmware upgrade, please revert to the previous version (section Administration → Firmware Upgrade).
• 🔧 Reset network settings on your phone.
  • On Android: Settings → System → Reset → Reset Wi-Fi, mobile network, and Bluetooth settings.
  • On iPhone: Settings → General → Transfer or reset → Reset network settings.
• 🛠️ Flash the router again. Download the latest firmware from the manufacturer's website and install it manually via the web interface.

If the failure occurred after experimenting with custom firmware (For example, LineageOS), try reverting to the stock OS version. Unstable builds often break wireless modules.

6. Hardware faults: when is the hardware to blame?

If all software methods have been tried, and Wi-Fi still doesn't work on my phone., but it works on a computer - it is possible hardware failureThis could be:

• 📡 Faulty Wi-Fi module in the phone (often after falls or exposure to moisture).
• 🔌 Problems with the router antenna (for example, oxidation of contacts).
• 🔋 Phone processor overheating, which is why the radio modules are turned off (relevant for Samsung Exynos and some MediaTek).

How to diagnose:

1. Check Wi-Fi on another phone. If another model connects without problems, your smartphone is to blame.
2. Connect your phone to a different network. For example, to a mobile hotspot or Wi-Fi in a cafe. If it doesn't work there either, the problem is with the phone.
3. Check if the phone is getting hot. If the case is hot and Wi-Fi turns off under load, overheating is to blame (the thermal paste needs to be replaced or dust cleaned).
4. Check the router for physical damage. Inspect the antennas, connectors, and indicators. If the Wi-Fi light is blinking abnormally (for example, red), the router is faulty.

Solutions:

• 🛠️ Take your phone to a service center. Repairing a Wi-Fi module costs 1,500–3,000 rubles (depending on the model). iPhone Replacing the antenna cable costs more - from 3 thousand.
• 🔧 Change your router. If it is his fault and the warranty has expired, it is cheaper to buy a new one (from 1.5 thousand rubles per TP-Link TL-WR840N).
• 📶 Use a USB Wi-Fi adapter. For Android an adapter with support will do OTG (For example, TP-Link TL-WN725N). On iPhone This won't work - Apple blocks external adapters.

If your phone is under warranty, do not disassemble it yourself, as this will void the warranty. Contact an authorized service center (for Apple, Samsung, Xiaomi and others).

7. External interference and environmental features

Sometimes Wi-Fi doesn't work on your phone because external factors, which do not affect the computer. For example:

• 📡 Metal barriers (refrigerator, reinforced concrete walls) shield the 2.4 GHz signal, but not the 5 GHz one.
• 🔌 Neighboring networks on the same channel create interference (relevant for apartment buildings).
• 📱 Other people's devices (for example, wireless headphones or a microwave oven) operate in the same range.

How to check:

• 📊 Install a Wi-Fi analyzer application on your phone (for example, WiFi Analyzer For Android or Network Analyzer For iOS). It will show the channel load.
• 🔍 Check if you are turning on a microwave or other equipment when the connection is lost.
• 📍 Move your phone closer to the router. If you get a signal, the problem is with your coverage area.

Solutions:

• 🔄 Change the Wi-Fi channel in the router settings (optimal for 2.4 GHz - 1, 6, 11).
• 📡 Install a repeater (signal repeater) if the phone is far from the router.
• 🛡️ Disable the router mode 802.11r (Fast Roaming). It speeds up reconnection between access points, but some phones do not support it.
• 📵 Enable "2.4 GHz Only" mode on your phone (if the router is operating in mixed mode). Android This can be done through Settings → Wi-Fi → Advanced → Wi-Fi Band.

If you have dual-band routerTry disabling the 5 GHz network for the duration of the test. Sometimes phones get stuck trying to connect to a faster network and ignore 2.4 GHz, even if the signal is more stable there.

8. Operating system features: Android vs. iOS

Android And iOS handle Wi-Fi connections differently. For example, iPhone The "Private Wi-Fi Address" (Random MAC) function may be triggered, which interferes with routers with MAC filtering. And on Android some manufacturers (for example, Xiaomi or Huawei) aggressively optimize background work, causing Wi-Fi to turn off after 5 minutes of inactivity.

Typical OS features that break Wi-Fi:

On Android It's also worth checking the settings VPN And proxyIf they are enabled, some applications (eg. 1.1.1.1 or Orbot) can redirect traffic through their servers, causing Wi-Fi to "not work" even though there is actually a connection.

On iPhone after upgrading to iOS 16+ a bug may trigger with DNS-over-HTTPS, which prevents Safari from opening pages even though Wi-Fi is connected. Solution: Go to Settings → Wi-Fi → [network] → Configure DNS and write it manually 8.8.8.8 (Google DNS) or 1.1.1.1 (Cloudflare).

How to reset network settings on iPhone?

Open Settings → General → Transfer or reset iPhone → Reset → Reset Network SettingsAfter this, all saved Wi-Fi networks and passwords will be deleted, and VPN and APN settings will be reset to factory defaults.

If you use alternative firmware (For example, LineageOS or GrapheneOS), make sure they have support for your Wi-Fi module enabled. Some custom builds disable proprietary drivers for wireless chips.

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FAQ: Frequently asked questions about Wi-Fi issues on your phone

❓ Why does Wi-Fi work on my laptop but not on my phone, even though they are close?

Most likely the problem is router settings (MAC filter, device restriction) or in IP conflictAlso, check if your phone has power saving mode enabled, which disables Wi-Fi in the background. Another possibility is that your phone is trying to connect to a 5 GHz network it doesn't support.

❓ My phone connects to Wi-Fi, but the internet isn't working. What should I do?

This is a typical symptom. problems with IP or DNS. Try:

1. Reboot the router.
2. On your phone, “forget” the network and reconnect.
3. Manually enter DNS (for example, 8.8.8.8).
4. Check if Internet Connection Sharing (ICS) is enabled on your PC, which may block other devices.

❓ After updating Android, my phone stopped detecting Wi-Fi. How can I fix this?

The update may have reset network settings or introduced a bug into the Wi-Fi module driver. Try this:

• Reset network settings (Settings → System → Reset → Reset Wi-Fi, mobile networks, and Bluetooth).
• Roll back the update (if there is such an option).
• Check the support forums for your model - this may be a known bug and the manufacturer has already released a patch.

If nothing helps, contact a service center—the Wi-Fi module may need to be reflashed.

❓ My iPhone connects to Wi-Fi, but pages won't load. What's wrong?

On iPhone a common reason is Private Wi-Fi Address feature (Random MAC) or DNS failure. Try:

1. Disable "Private Wi-Fi Address" in network settings.
2. Manually enter DNS (8.8.8.8 or 1.1.1.1).
3. Reset network settings (Settings → General → Transfer or reset → Reset network settings).
4. Check if the "Traffic Saver" mode is enabled in Settings → Cellular.

❓ Can an antivirus or VPN block Wi-Fi on a phone?

Yes, some antiviruses (for example, Avast or Kaspersky) and VPN applications (for example, ProtonVPN or NordVPN) may redirect traffic through their servers or block suspicious connections. Try:

• Temporarily disable antivirus/VPN.
• Check your antivirus's firewall settings.
• Uninstall the conflicting application if the problem persists.

On Android It's also worth checking the app permissions in Settings → Apps → [VPN/antivirus name] → Permissions.