Is your iPhone 11 not connecting to the internet even though cellular data is turned on? Whether you’re dealing with slow speeds, no connection, or a “Could not activate cellular data network” message, there are several ways to fix it. Here are the top solutions to get your mobile data working again.
1. Make Sure Cellular Data Is Enabled
First things first — check if cellular data is actually turned on.
- Go to Settings > Cellular.
- Make sure the Cellular Data toggle is on.
- Tap Cellular Data Options and:
- Set Voice & Data to LTE or 5G/4G, depending on your carrier.
- Disable Low Data Mode if it’s turned on.
- If you’re abroad, turn on Data Roaming.
2. Verify Your Data Plan Is Active
If your data plan expired or you’ve hit your data cap, your iPhone won’t be able to connect.
- Call or log in to your carrier’s app or website to check your plan status.
- Ask your carrier if there’s an outage or restriction on your account.
3. Toggle Airplane Mode On and Off
This resets your iPhone’s radios and can often restore the connection.
- Open Control Center and tap the Airplane Mode icon.
- Wait 10 seconds, then tap it again to turn it off.
- You can also do this in Settings > Airplane Mode.
4. Check Your Date and Time Settings
Incorrect time settings can interfere with your network connection.
- Go to Settings > General > Date & Time.
- Turn on Set Automatically.
5. Turn Off VPN If You’re Using One
A VPN can block or slow your cellular data connection.
- Open your VPN app and disconnect.
- Or go to Settings > VPN and make sure it says Not Connected.
6. Restart Your iPhone
A simple reboot can clear out minor bugs.
- Press and hold the Side button + Volume Up/Down.
- Drag the slider to power off.
- After 30 seconds, press the Side button again to restart.
7. Update iOS
Software updates often include fixes for cellular bugs.
- Go to Settings > General > Software Update.
- Download and install any available updates using Wi-Fi.
8. Check the SIM Card
A loose or damaged SIM can block mobile data access.
- Use a SIM ejector or paperclip to remove the SIM tray.
- Wipe the SIM with a lint-free cloth and reinsert it properly.
- If it’s scratched or bent, ask your carrier for a replacement.
9. Reset Network Settings
This erases all network configurations and can clear out conflicts.
- Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.
- Enter your passcode and confirm.
Note: This will also erase saved Wi-Fi passwords and paired Bluetooth devices.
10. Contact Apple or Your Carrier
Still stuck? It could be a hardware issue (like a bad antenna or SIM tray), or a carrier-related problem.
- Contact Apple Support for diagnostics.
- Call your carrier to check for outages, restrictions, or account issues.
Bonus Tips to Avoid Future Cellular Issues
- Don’t accidentally leave Airplane Mode on.
- Always install Carrier Settings Updates when prompted.
- Use a sturdy case to protect your phone (and SIM tray) from damage.
- Keep an eye on signal strength via the status bar.
With these fixes, your iPhone 11 should be back online and using cellular data in no time.
Thank you , my wife’s phone couldn’t get internet for 5 days , purchased a new sims card . Frustrated with straight talk C/S. Your site, suggest turning off VPN. Did a search in settings turned off COX McAfee. Able to receive carriers updated .. works great thanks .