Fix LTE/4G Not Working on iPhone

In this guide, let us discuss why LTE/4G is not working on your iPhone, Also, I have put up various troubleshooting methods that you can implement to fix it. Although we have embraced the 5G technology, Apple iPhones still majorly run on LTE/4G.

When you say LTE/4G not working on iPhone, it means you are out of network. This makes the otherwise featureful and expensive iPhone useless. Without the LTE/4G network, you cannot make phone calls and send text messages. You cannot even use the instant messenger apps or Google Apps. Almost everyone with a smartphone has faced a severed LTE/4G connection in their lives.

Possible Reasons Why LTE/4G Not Working on iPhone

Before moving into the troubleshooting section, we need to understand what commonly causes LTE/4G network disruption.

The LTE/4G on your iPhone may not be working due to the data balance getting exhausted. If you have spent your daily quota of data from your ISP, then you cannot use more unless you buy extra data.

The issue of an unresponsive LTE/4G network may happen due to some maintenance being carried out by the ISP. Until they finish their fixing, servers will be down thus making you experience no LTE/4G network on your iPhone.

If iPhone’s network settings have some bug or the iOS has some technical issues, it can cause issues with the LTE/4G network. You need to check whether you have accidentally enabled the flight mode on your iPhone. Also, often users accidentally tap on the mobile data icon and disable it. This cuts you off from the otherwise active network.

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Troubleshooting Tips to Fix LTE/4G Not Working on iPhone

Let us go through the various solutions and get the LTE/4G network working again on the iPhone.

1. Enable Mobile Data

It is a simple tip that requires you to enable the mobile data option on your iPhone. In case, you disabled it by mistake, you can reinstate it easily.

  1. Access the control center on your iPhone by swiping from bottom to up on the screen.
  2. Tap on the cellular data icon to enable it [it turns green meaning mobile data is active]
    enable mobile data on iPhone

2. Activate Data Roaming on your iPhone

To continue enjoying the LTE/4G network when you travel outside of your state or country, make sure to enable data roaming on your iPhone. Otherwise, you will end up with LTE/4G not working on the iPhone.

To enable data roaming,

  1. Launch the Settings app.
  2. Then tap on Mobile Data.
  3. Next, tap on Mobile Data Options.
  4. Enable Data Roaming by tapping on the switch beside it.
    enable data roaming on iPhone

3. Toggle Flight Mode on iPhone

If you have enabled the flight mode on your iPhone, disable it. Otherwise, even if it has not been activated, you can quickly enable and disable it. Doing so has often helped in reinstating the LTE/4G network on the iPhone.

  1. Open the control center on the iPhone.
  2. Then tap on the flight mode.
  3. If the icon turns orange it means flight mode is enabled. Grayed-out means flight mode is disabled.
    toggle flight mode to fix LTE 4G not working iPhone

4. Eject and Re-insert the SIM Card on your iPhone

Did you eject your SIM card from the iPhone recently? Then maybe you did not re-insert the SIM card properly which is why the LTE/4G network is not working on the iPhone.

  1. Turn off the iPhone. [Make sure the iPhone is not connected to any charger]
  2. Use the SIM ejector pin and remove the SIM card.
  3. Wipe it with a soft and clean cloth.
  4. Carefully put it back on the SIM tray and insert it back into the iPhone.
  5. Turn on the iPhone and check the network. The LTE/4G network should be fixed.

5. Give your iPhone a Restart

Sometimes, I have observed that when the LTE/4G network is not working, then restarting the phone gets it working again.

  1. Press the power button of the iPhone.
  2. You will see the option Slide to Power Off. Swipe on it to turn off the iPhone.
    switch off iPhone to fix LTE/4G not working issue
  3. After a few seconds, again press the power button to turn on the iPhone. Check if the network issue has been fixed or not.

6. Check if You Have Ran Out of Daily Data Quota

Open the internet provider’s app on your iPhone and check if you have run out of the daily quota of data. Otherwise, if you have a data plan that provides you with a monthly quota of data, check if it has been exhausted. Then the network will be shunted on your device by the ISP until you buy extra data or get a new data plan.

Lte 4G not working iPhone check data

If any of the two issues has happened, you can buy more data to resume the network again. Follow the instructions on the service provider’s app and you will be good to go.

7. Update iOS Version

To remove bugs and related glitches, you can upgrade the iOS to the latest build. To search for iOS updates, follow the steps below.

  1. Open the Settings app.
  2. Tap on General > tap on Software Update.
  3. If an update is available for installing, tap on Download and Install to continue.
    install new iOS update on iPhone

8. Update the Carrier Settings

Your network provider often releases minor updates which you can install from the iOS settings. Installing these updates will ensure that you will not face disruption in the LTE/4G network.

  1. Tap the Settings app.
  2. Then tap on General > select About.
    about iPhone
  3. On the About section, you may see a pop-up telling you to update the carrier settings. Follow the on-screen instructions.

9. Reset the Network Settings on iPhone

Often users mention that resetting the network settings on iPhone has helped fix the issue of LTE/4G not working on iPhone.

  1. Open the Settings app > Tap on General.
  2. Then tap on Transfer or Reset iPhone.
    reset iPhone network to fix iPhone LTE/4G not working
  3. Tap on Reset.
  4. From the menu select Reset Network Settings.
    reset network settings iOS fix LTE 4G not working
  5. You have to provide your iPhone passcode to proceed with the reset process.

After the reset is over, check if you can receive the LTE/4G network back on your iPhone or not.

10. Disable VPN on iPhone

Often having the VPN apps running in the background can cause the LTE/4G network to get unresponsive. This happens due to the concerned VPN server taking too much load and becoming unresponsive itself. Disabling the VPN momentarily can fix the issue.

  1. Open the Settings on iPhone.
  2. Scroll to VPN and tap the switch beside it to disable it.
    disable VPN on iPhone
  3. You may also open the VPN app and disable it from within the application.

Wrapping Up

Without internet and cellular network your work and life will come to a standstill. Everyone today is highly dependent on their smartphones for most of the work. So, follow this troubleshooting guide and fix the issue of LTE/4G not working on iPhone.

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