Why won't my computer connect to Wi-Fi via my phone? A complete diagnostic guide.

You are trying to share the Internet from your phone to your computer via mobile hotspot, but your PC stubbornly refuses to connect to the network you've created? This problem is familiar to millions of users, according to statistics. Google Mobile Services, every fifth technical support request is related to Wi-Fi distribution errors. The causes can be found in the smartphone settings (regardless of whether Android you or iPhone), as well as in the configuration of the computer's network adapter.

In this article we will look at all possible failure scenarios — from the banal disabled modem to IP address conflicts, and we'll also provide diagnostic checklists for each stage. We'll pay special attention to nuances that smartphone and Windows manufacturers often gloss over: for example, why Samsung Galaxy may block connection of new devices after update One UI 6.0, or how to bypass the limit on the number of clients in iOS 17.

Before you move on to complex manipulations, check three key points:

• 🔄 Have you rebooted? Both a phone and a computer? 60% of problems are solved with this step.
• 📶 Is mobile internet enabled? On your phone? Without it, the hotspot will create a network, but won't provide internet access.
• 🔒 Is the password correct? are you entering? On iPhone it is displayed in the hotspot settings, on Android - can be changed manually.

1. Problems on the phone side: modes and limitations

Let's start with the signal source itself. Modern smartphones have many "hidden" limitations that can block Wi-Fi distribution. For example, Xiaomi by default, it limits traffic for connected devices if battery saving mode is enabled, and iPhone Can automatically turn off the hotspot after 90 seconds of inactivity.

The first thing to check:

• 📱 Is modem mode enabled? On Android: Settings → Connections → Mobile Hotspot & TetheringOn . iOS: Settings → Tethering.
• 🔋 Battery saving Disabled? In this mode, many phones block background processes, including Wi-Fi sharing.
• 🚫 Are there any active VPNs? or firewalls (for example, Avast Mobile Security), which can block data transmission?
• 🔄 Is the firmware updated? IN Android 14 And iOS 17 Internet distribution algorithms have changed—old versions may conflict with new PC drivers.

If you use dual SIM cards, make sure the hotspot is configured for the SIM card that has access to the mobile internet. On some phones (for example, Realme GT Neo 5) SIM priority for distribution must be selected manually in the modem settings.

What should I do if the hotspot turns on but immediately turns off?

This problem is typical for iPhone with the "Auto Power Off" function enabled (located in Settings → Tethering → Auto-disconnect). On Android The culprit is often battery optimization for the Settings app - add it to the exceptions section Settings → Battery → Battery optimization.

2. Wi-Fi settings on your computer: drivers and protocols

If the phone distributes the network, but the computer does not see it or does not connect, the problem is most likely in network adapterEven if everything looks fine in Device Manager, the drivers may be outdated or corrupted. This is especially true for laptops with adapters. Intel AX200/AX210 or Qualcomm Atheros, which often conflict with access points created by phones.

Step-by-step diagnostics:

1. Open device Manager (keys Win + X → device Manager).
2. Expand the branch Network adapters and find your Wi-Fi module (for example, Intel Wi-Fi 6 AX200).
3. Right click → Update driver → Automatic search.
4. If the update does not help, download the driver from the laptop manufacturer's website (not from the Intel/Qualcomm website!).

Another common reason is - incompatibility of Wi-Fi standardsFor example, if the phone only distributes the network in the range 5 GHz, and the old laptop only supports 2.4 GHzCheck your phone's hotspot settings:

• On Android: there may be an option in the modem settings Network range (select 2.4 GHz or Auto).
• On iPhone: the range is fixed, but you can try changing it Max. number of connections (sometimes it helps to reduce to 1-2 devices).

3. IP address conflicts and network settings

When a computer connects to a phone's hotspot, it should automatically obtain an IP address from the DHCP server (which in this case is the smartphone). If this doesn't happen, an error occurs. "No internet access" or "Limited"Reasons:

• 🔢 Static IP on the PC it conflicts with the range that the phone distributes (usually 192.168.43.x For Android And 172.20.10.x For iPhone).
• 🔄 DHCP service failure on the phone (rarely, but it happens after a factory reset).
• 🛡️ Windows Firewall or antivirus (for example, Kaspersky) blocks the receipt of IP.

How to fix:

1. On your computer, open Settings → Network & Internet → Wi-Fi → Manage known networks.
2. Find the hotspot network, click Properties → IP settings.
3. Set the switch to position Automatic (DHCP).
4. If this doesn't help, try manually entering the IP from the phone's range (for example, 192.168.43.100 with a mask 255.255.255.0 and a gateway 192.168.43.1).

On iPhone Sometimes resetting network settings helps: Settings → General → Transfer or reset → Reset → Reset network settingsAfter this, the hotspot will be created with the new DHCP parameters.

4. Mobile operator restrictions

Many operators (eg MTS, Beeline, Tele2) impose restrictions on internet sharing, even if you have an unlimited plan. This can manifest itself in the following ways:

• 📵 The hotspot turns on, but turns off after 1-2 minutes.
• 🐢 The internet speed on your PC is limited (for example, 64 kbps).
• 🚫 Complete lack of network access when connected.

How to check:

1. Insert the SIM card into another phone and try sharing the Internet.
2. Call your operator and check if your tariff supports this feature. modem/hotspot (sometimes it is necessary to connect an additional option).
3. Check your balance—some carriers block data sharing if your balance is negative, even if your phone's internet connection is working.

If the problem is in the operator’s restrictions, you can bypass them using a VPN on your phone (for example, ProtonVPN or Windscribe), but this may violate the terms of use of the network. The alternative is to use USB cable for distributing the Internet (on Android this is called USB modem).

5. Software conflicts: antiviruses, VPNs, and firewalls

Security software is often the cause of connection problems. For example, Avast And ESET NOD32 By default, new network connections are blocked, and the built-in Windows firewall may consider the phone's hotspot as an "unsafe network."

What to do:

• 🛡️ Temporarily disable your antivirus and firewall, then try connecting again.
• 🔍 Check the Windows Firewall log: Control Panel → Windows Defender Firewall → Advanced settings → Logs.
• 🔄 If you use a VPN on your PC (for example, NordVPN), disable it - it may conflict with routing through the phone.

On Android It's also worth checking the app settings. Google Play Services — it's responsible for managing network connections. If it's blocked or its cache data is corrupted, the hotspot may not work properly. Clear the cache in Settings → Apps → Google Play Services → Storage → Clear cache.

How to completely reset network settings on Windows 11?

Open Settings → Network & Internet → Advanced network settings → Network resetAfter rebooting, all network adapters will return to factory settings, but you will have to re-enter your Wi-Fi passwords.

6. Hardware problems: Wi-Fi modules and SIM cards

If you have tried all software methods and your computer still won't connect, you might want to consider hardware malfunctions:

• 📡 The Wi-Fi module is damaged on your phone or computer. You can check by connecting to a different network.
• 📱 The SIM card is faulty or slot. Try moving the SIM card to a different phone.
• 🔌 Nutritional problems - if the phone is discharged less than 20%, some models (Samsung A54, iPhone 13) automatically turn off the hotspot.

It often breaks down on laptops. antenna cable Wi-Fi module - you can check it by gently pressing on the housing near the screen hinges. If the signal appears or disappears, this indicates a break. A similar problem can occur in phones. Wi-Fi chip damage after falling or getting wet.

If you suspect a problem with your phone, try creating a hotspot on another device and connecting to it from the same computer. If the connection is successful, the problem lies with the original phone.

7. Alternative methods of distributing the Internet

If Wi-Fi sharing still doesn't work, try these alternative methods:

For USB modem on Windows You may need to install additional drivers (eg. Samsung USB Driver or Apple Mobile Device Support). If the computer does not recognize the phone, check if the mode is enabled. File Transfer (MTP) or Charging only in the phone's notification shade.

FAQ: Frequently Asked Questions

🔹 Why does my iPhone's hotspot disconnect after 1-2 minutes?

IN iOS there is a function Auto power off, which turns off the hotspot when there are no active connections. To disable it:

1. Go to Settings → Tethering.
2. Click on Auto power off and select Never.

If there is no option, update iOS to the latest version.

🔹 My computer connects to the hotspot, but the internet isn't working. What should I do?

The reasons may be different:

• 📵 The operator is blocking distribution — check the tariff.
• 🔧 Incorrect IP settings - reset the network settings on your PC.
• 🛡️ The firewall is blocking traffic - temporarily disable it.

Start by checking the internet connection on your phone itself. If there's no connection there either, the problem lies with your carrier.

🔹 Is it possible to share Wi-Fi from a phone without a password?

On Android some firmware (for example, MIUI on Xiaomi) allow you to create an open network, but it is not secure. iPhone Password is required. Alternatively, use WPS (if the computer supports it).

⚠️ Attention: Open networks are vulnerable to an "Evil Twin" attack, where an attacker creates an access point with the same name and intercepts traffic.

🔹 Why does Windows say "We couldn't connect to this network"?

This error occurs if:

• 🔑 Incorrect password entered (check the case!).
• 📡 The phone distributes the network in the range 5 GHz, and the PC adapter only supports 2.4 GHz.
• 🔄 MAC address restriction is enabled in your phone settings (disable it).

Try removing the network from Windows' known connections and reconnecting.

🔹 How to increase Wi-Fi speed from your phone?

Speed ​​depends on:

• 📶 Mobile network signal (check the level in the phone status bar).
• 📡 Wi-Fi range (5 GHz faster, but shorter range).
• 🔧 QoS settings on the phone (on Samsung turn it off Intelligent QoS in the modem settings).

For maximum speed:

1. Connect your phone to 5 GHz Wi-Fi (if you are distributing the Internet from another network).
2. Disable background apps on your phone.
3. Use USB modem instead of Wi-Fi.

If none of the suggested methods help, the issue may be unique to your phone model or PC configuration. In this case, we recommend:

• 🔍 Check the manufacturer's support forums (e.g. XDA Developers For Android or Apple Communities For iPhone).
• 📞 Contact your mobile operator's support service.
• 💻 Run diagnostics on your PC's network adapter using this utility netsh:

netsh wlan show interfaces
netsh int ip reset