How to fix Galaxy S9 that can’t connect to 4G LTE

Recently, a friend of mine reached out to me asking about his Galaxy S9’s internet connectivity problem. He was unable to connect to 4G LTE. The Wi-Fi worked fine on the phone, it was the mobile data that refused to connect. To help my friend, I did a little research and found that there is a huge number of Galaxy S9 owners facing the same problem.

A Galaxy S9 can’t connect to 4G LTE for a number of reasons. It can be your Data, it can be your APN settings, it can be your SIM wrongly inserted in the phone, or it can be your Network Operator as well. It is quite easy to fix the 4G LTE connectivity problems on the Galaxy S9, but only when you know the root cause of the problem.

How to fix Galaxy S9 that can’t connect to 4G LTE

In this guide, I have listed all the possible solutions. Try all these solutions one by one to find the solution that fixes Galaxy S9 that can’t connect to 4G LTE.

Turn off flight mode

First things first, you need to check if the Flight Mode is turned off or not. If it’s on, turn it off quickly. The 4G LTE connectivity doesn’t work when the flight mode is in the play.

Make sure your SIM has 4G Data

The very first thing to check here whether your phone SIM has 4G Data or not. For this, you have to call your Network Operator or dial a code using the dialer in order to know the amount of Data in your 4G Data Bucket. If there is now Data in the bucket, you must subscribe to a package and get the Data before trying to connect to the internet.

Check the APN Settings & Preferred Network Type

1. Open Settings > Connections > SIM Card Manager.
2. Click on the SIM card that you are using.
3. Now click on Access Point Names > Click on the Menu button > Reset to default.
4. Get back to the SIM options > Preferred Network Type.
5. Make sure that it is set to 2G/3G/4G (Automatic).
6. Restart your phone after these settings.

Reset Network Settings

1. On the Galaxy S9, open Settings.
2. In Settings > About Phone > RESET.
3. Now in RESET > Reset Network Settings.
4. Reset the Network Settings now and restart the phone.

This will reset settings for WiFi, Mobile Data, and Bluetooth. Check if the 4G LTE is working now or not.

Check the SIM Configuration for Mobile Data

At times, we use 2 SIM cards in a dual-SIM enabled Galaxy S9. If one of the SIMs have 4G LTE, and the other doesn’t, it can cause an issue as well. Wondering how? Well, if the SIm without 4G LTE is selected to work for Mobile Data in the SIM Card Manager, it will not let you connect to the 4G. In such a case, you have to choose the right SIM for Mobile Data. Follow these steps to choose the SIM.

1. Open Settings on your phone.
2. In Settings > Connections.
3. In Connections > SIM Card Manager.
4. You will find Mobile data under preferred SIM card.
5. Click on Mobile Data and choose the SIM that has the 4G Data in the bucket.

Pull out the SIM card and put it back

If the SIM card is not rightly inserted in the SIM tray, it can cause severe connectivity issues. Use a SIM Card Eject tool to pull the SIM out of the phone. Place the SIM in its tray properly and put it back. Restart your phone after doing this. Check the Mobile Data now.

Boot the phone in Safe Mode

A recently installed application can also create a conflict with the Mobile data on your phone. You can disable all the applications and see if the Mobile data works in the absence of applications. To do so, you can boot your Galaxy S9 in Safe Mode. Follow these steps to do this.

1. Power down the Galaxy S9 completely.
2. Now turn on the Galaxy S9.
3. As soon as you see the Samsung Logo on the screen, press the Volume Down key.
4. Keep the Volume Down key pressed unless you see the home screen.
5. On the home screen, you will now find a Safe Mode watermark on the lower left side.
6. All the apps have been disabled now. Check the 4G connectivity.
7. If the phone works fine now, you should try uninstalling your recently installed applications one by one.

Contact your Network Operator

So, you have tried all the solutions given above but none of them have worked. What you can do is to reach out to your Network Operator. If there is nothing wrong with the hardware of your phone, your Network Operator should be able to help you out. Visit your Network Operator’s nearest service center to get this fixed.

Conclusion

That’s all. In my case, it was the wrong SIM selected for the Mobile Data. I switched to the SIM card with Mobile Data Package and it started working for you. The case can be different for you. I hope the solutions given above were useful. If you have anything to say, drop it in the comments section below.