10 Best Fixes for LTE/4G Not Working on iPhone

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

When you say LTE/4G is not working on the iPhone, it means you are out of the network. This makes the otherwise featureful and expensive iPhone useless. Without the LTE/4G network, you cannot make phone calls or send text messages. You cannot even use instant messenger apps or Google Apps. Almost everyone with a smartphone has faced a severe 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 because your data balance has run out. If you have used your daily quota of data from your ISP, 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 the iPhone’s network settings are bugged or the iOS has 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, cutting them off from the otherwise active network.

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1. Enable Mobile Data

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

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]
   

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, LTE/4 G will not work 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.
   

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.
   

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

Did you recently eject your SIM card from the iPhone? If so, you may not have properly reinserted it, 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.
   
3. After a few seconds, again press the power button to turn on the iPhone. Check to see if the network issue has been fixed.

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 your daily data quota. Otherwise, if you have a data plan that provides you with a monthly quota, check if it has been exhausted. Then, the ISP will shun the network on your device until you buy extra data or get a new data plan.

If any of the two issues have 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.
   

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.
   
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

Users often mention that resetting the network settings on their iPhones has helped fix the issue of LTE/4G not working.

1. Open the Settings app > Tap on General.
2. Then tap on Transfer or Reset iPhone.
   
3. Tap on Reset.
4. From the menu select Reset Network Settings.
   
5. You have to provide your iPhone passcode to proceed with the reset process.

After the reset is over, check whether you can receive the LTE/4G network again on your iPhone.

10. Disable VPN on iPhone

Often, having the VPN apps running in the background can cause the LTE/4G network to become unresponsive. This happens because the VPN server concerned takes too much load and becomes 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.
   
3. You may also open the VPN app and disable it from within the application.

Wrapping Up

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