You turned on modem mode on iPhone, but your devices aren't connecting to the shared network—or they're connecting, but the internet isn't working? This problem is familiar to many owners. Apple-smartphones, especially after the update iOS or changing the SIM card. In 80% of cases, the culprit is not hardware faults, but software glitches or incorrect settings.
In this article we will look at All possible reasons why your iPhone has stopped sharing Wi-Fi, from a simple disconnected mobile internet connection to hidden operator restrictions. You'll learn how to diagnose the problem in 2 minutes, which settings to check first, and what to do if none of the standard methods help. We'll also cover specific model-specific nuances. iPhone 12/13/14/15 With eSIM and dual SIM devices.
1. Checking the basic conditions for Wi-Fi distribution
Before digging deep into the settings, make sure you have completed minimum requirements to operate in modem mode:
- 📶 Mobile Internet is enabled — Without a 4G/5G network connection, there's no data sharing. Check the signal indicator in the upper right corner.
- 🔄 Data transfer is active - go to
Settings → Cellular → Data Optionsand make sure the option isCellular dataincluded. - 🔋 Battery charge is above 20% — iOS Automatically disables modem mode when battery is low (starting from iOS 13).
- 📱 Modem mode is enabled by the operator. — some tariffs block distribution (more on this below).
If at least one of these conditions is not met, iPhone Either the Wi-Fi won't be available at all, or the devices will connect to the network but won't have internet access. For example, if mobile data is disabled, devices may appear in the list of connected devices, but pages won't load.
Quick test: try opening the site via mobile internet directly on iPhoneIf the pages aren't loading, the problem is with your network connection, not your modem mode.
2. Tethering settings: what could go wrong
Even if the mobile internet works, Incorrect modem mode parameters may block distribution. Here's what to check:
- Is tethering mode enabled? Go to
Settings → Tethering(orSettings → Cellular → Personal Hotspoton older versions iOS) and activate the sliderAllow others. - Is the password correct? By default iPhone Generates a complex password of 8+ characters. If you've changed it, make sure you're entering the exact same one (case is important!).
- Are there any device restrictions? In the same modem menu, check the list
Connected devicesIf there are any locks there, remove them.
Please note the point Max. number of connectionsOn . iPhone With iOS 14+ By default, up to 5 devices are allowed to connect simultaneously. If the limit is reached, new devices will not be able to connect.
Is tethering mode enabled in settings?
Does the connection password match?
Is there a limit on the number of devices?
Is tethering allowed for the current SIM card?-->
Hidden Trap: if you use eSIM, make sure that the modem mode is enabled for it, and not for the physical SIM card (if one is installed). You can switch the priority in Settings → Cellular → Cellular Data Plans.
3. Problems with the SIM card or operator
Mobile operators often impose restrictions on Internet distribution, especially on unlimited plans. Here's how to check:
- 📞 Call the operator and check whether tethering is allowed on your tariff. For example, MTS And Beeline They may block it on cheap packages.
- 💳 Check your balance — if the score is zero or negative, the distribution is automatically disabled.
- 🔄 Restart your SIM card: Remove it from the tray, wait 30 seconds, and reinsert it. This sometimes clears temporary operator lockouts.
If you have recently changed your SIM card (for example, from a physical one to eSIM), Maybe, operator profile is not activatedGo to . Settings → General → About and check the section NetIf it's empty or displays an error, please contact support.
What should I do if the operator blocks the distribution?
If the operator has confirmed the block, you have 3 options:
1. Change your tariff to one that allows data sharing (usually these are packages marked "For modems" or "Internet for all devices").
2. Use a VPN on the connecting device (sometimes bypasses restrictions, but may violate operator rules).
3. Buy a separate SIM card with data sharing enabled (for example, from Tele2 or Yota, where tethering is often enabled by default).
Important! Some operators (eg. Megaphone) can temporarily block distribution If your traffic limit is exceeded, even if your plan is advertised as unlimited. Check your traffic usage in your personal account.
4. iOS Crashes and Software Errors
If everything is OK with the SIM card and settings, but iPhone Still not distributing Wi-Fi, it's my fault software glitchHere's how to fix it:
- Restart your iPhone - hold the power button and any of the volume buttons until the slider appears
Turn offAfter turning off, wait 1 minute and turn on again. - Reset network settings:
Settings → General → Transfer or reset iPhone → Reset → Reset Network SettingsThis will delete all saved Wi-Fi networks and passwords, but often solves the problem with sharing.
- Update iOS - go to
Settings → General → Software Updateand install the latest version. In iOS 16.4+ Bugs with the modem mode were fixed for iPhone 14/15.
If after resetting network settings iPhone It still doesn't distribute Wi-Fi, try it create a new access point:
- Go to
Settings → Tethering. - Click on
Wi-Fi passwordand change it (for example, add a number at the end). - Reboot iPhone.
This will reset the Wi-Fi module cache and sometimes helps when the distribution freezes.
Critical error: if in the menu Modem mode slider Allow others gray and inactive is a sign Wi-Fi module hardware failure or blocking at the level IMEI (For example, after a repair). In this case, only a service center can help.
5. Conflicts with VPNs, firewalls, and antiviruses
Applications for VPN, ad blockers or antiviruses (For example, Kaspersky, Avast) can intercept traffic and block distribution. Here's how to check:
- 🔒 Disable VPN - go to
Settings → VPNand deactivate the connection. If sharing works, the problem is in the VPN app settings. - 🛡️ Remove your antivirus — Temporarily remove all security software and check the distribution. If this helps, configure exclusions in your antivirus.
- 🌐 Check DNS - some applications (for example, AdGuard) change DNS servers, which can break distribution. Reset them in
Settings → Wi-Fi → ⓘ Near your network → Configure DNS → Automatic.
Conflicts arise especially often with VPN applications, which are used traffic redirection (For example, ProtonVPN or NordVPN). Try:
- Disable the feature
Always-On VPNin the application settings. - Or completely remove the VPN and reboot iPhone.
Note: if you use iPhone in a corporate network with installed configuration profile (for example, for work), it may block distribution. Check in Settings → General → VPN and device management.
6. Hardware malfunctions and when to go to service
If none of the software methods helped, the problem may be in ironHere are the signs of hardware failure:
| Symptom | Possible cause | Solution |
|---|---|---|
| The modem mode is turned on, but the devices don't see the network. iPhone | The Wi-Fi module is faulty | Replacement of the module in the service center |
| The network is visible, but the internet doesn't work at all iPhone, nor on connected devices | 4G/5G antenna issues | Diagnostics at the ASC |
| Distribution works only after reboot and soon is disabled | Overheating or faulty battery | Replacing the battery |
| Error: "Failed to activate modem mode" | Damaged IMEI or operator blocking | Recovery IMEI or replacing the SIM card |
The most vulnerable models: iPhone 12/13 with modules Qualcomm (especially after falls) and iPhone 15 With eSIM (problems with operator profile). If your iPhone If it fell or got wet, there is a high probability that the antenna contacts have come loose.
How to check: Try connecting to a different Wi-Fi network (for example, your home router). If iPhone If it doesn't see any networks, the problem is definitely with the Wi-Fi module. If it sees networks but doesn't broadcast, the problem lies with the software or the operator's settings.
7. Features of sharing on iPhones with eSIM and dual SIM cards
If you use iPhone With eSIM or two physical SIM cards, Wi-Fi distribution has its nuances:
- 📱 Selecting a SIM card for sharing: by default iPhone distributes the Internet from the SIM card that is indicated as
MainVSettings → Cellular → Cellular Data PlansIf you have two SIM cards, check that tethering is enabled for the one you want. - 🔄 Profile conflict: If eSIM If your SIM card is from one carrier and your physical SIM card is from another, there may be a settings conflict. Try disconnecting one of the SIM cards.
- 🚫 Operator restrictions: some operators (eg Tinkoff Mobile) only allow data sharing to the main SIM card, even if the traffic is unlimited.
On iPhone 13/14/15 With iOS 16+ a function has appeared Dual SIM for cellular data, which allows you to use traffic from both SIM cards. However, Wi-Fi sharing will only work through the primary SIM card, even if the second one has a better signal.
How to check:
- Go to
Settings → Cellular. - Click on the phone number (or eSIM).
- Make sure the option is
Allow cellular data usageincluded. - Check what's in the section
Cellular data plansThe desired SIM card has been selected.
What to do if eSIM does not activate?
If eSIM It doesn't activate and because of this the distribution doesn't work:
1. Delete your profile eSIM V Settings → Cellular → [your eSIM] → Remove Cellular Plan.
2. Reboot iPhone.
3. Download the profile eSIM again (QR code or letter from the operator).
4. If this does not help, contact your operator for a new profile.
FAQ: Frequently asked questions about sharing Wi-Fi from your iPhone
Is it possible to share Wi-Fi from an iPhone without a SIM card (only via USB or Bluetooth)?
No, to share mobile internet, you need an active SIM card with cellular data enabled. However, you can share Internet from a connected Wi-Fi (If iPhone connected to the router itself) via the function Personal Hotspot → Allow Others, but this does not work on all operators.
Why does my iPhone share Wi-Fi, but the speed is very slow?
The reasons may be different:
- 📶 Weak 4G/5G signal - check the number of bars in the status bar.
- 🔋 Save traffic - turn it off
Low data consumption modeVSettings → Cellular → Data Options. - 🔄 Operator restrictions - some plans throttle the speed when sharing.
- 📱 Overheating iPhone - at high temperatures the processor reduces performance.
How to share Wi-Fi from iPhone to Windows/PC if it won't connect?
If iPhone distributes the network, but the PC does not connect:
- On Windows check that in
Network parametersselectedPrivate network, and notPublic. - Update the Wi-Fi adapter driver on your PC.
- Disable any third-party firewalls on your PC (e.g. Avast or ESET).
- Try connecting via
USB(VModem modeon iPhone the item must be includedUSB only).
Is it possible to share Wi-Fi from one iPhone to another iPhone?
Yes, but with some reservations:
- 🔄 It must be enabled on both devices
Wi-FiAndBluetooth. - 📱 On the distributor iPhone V
Settings → Tetheringmust be enabledMax. compatibility(for older models). - 🚫 Some operators block iPhone-to-iPhone connections (for example, MTS on tariffs without the "Modem" option).
The alternative is to use AirDrop to transfer files or Personal hotspot through Bluetooth.
What should I do if sharing stops working after updating iOS?
This is a common problem after major updates (for example, with iOS 15 on iOS 16). Procedure:
- Reset network settings (
Settings → General → Transfer or reset iPhone → Reset network settings). - Remove and reinstall the operator profile (if using eSIM).
- Roll back to the previous version iOS through iTunes (only if the distribution is critical).
- Contact support Apple — sometimes "silent" patches are released for such bugs.