O2 Mobile Data Not Working? – Complete Fix Guide

Has your O2 mobile data not working lately? We have the best solution!

The Mobile Data on every network operator out there is dependent on several things.

To understand how exactly to approach the problem with your mobile data, we must first learn what factors could impact its functionality.

Let’s review the best ways to solve this issue:

When O2’s mobile data has stopped working, reboot your mobile device and reinsert the SIM card. Next, reconnect your mobile device to the O2 network and update the carrier settings. Finally, perform a Network Reset on the mobile device to fix the issue!

Why Is My Mobile Data Not Working O2?

In order to understand why your O2 mobile data is not working correctly, we’ll have to go through all of the potential causes.

It’s worth noting that more than one thing could have impacted your mobile running on the O2 network’s ability to use mobile data and connect.

Here’s a summary of most of the things causing this O2 issue:

• There’s a problem with the Mobile Data Feature
• The O2 SIM is Seated Incorrectly
• A Bug with the Device’ Settings
• The O2 Network is Down
• Incorrect Carrier Settings of your mobile device

In most users’ cases, this is what impacts the mobile data feature on the O2 network!

Let’s review what are the best solutions to solve this problem quickly!

O2 Mobile Data Not Working – Quick Fix!

We’ll begin excluding these possibilities we’ve reviewed above one by one with our solutions.

Follow the chronological setup of your guide and pay attention to all important tips and notes to achieve the best troubleshooting success.

Before troubleshooting, check O2’ service status at https://status.o2.co.uk/

Let’s jump into the guide now!

Solution #1 Reboot your Mobile Device

The first and most simple resolution to the problem is to Reboot your Mobile Device!

In most cases, this manages to settle whatever cellular/network problem your device may have, only if it’s temporal.

This will cause your device’s software and hardware to refresh all at once, clear the memory cache and get your device reconnected to cellular.

How to Reboot a mobile device:

Via the Power Button:

1. Press and hold the Power Button.
2. Choose “Restart” from the menu.
3. Wait for 1-2 minutes.
4. Start up your Mobile Device.

Via the Settings Tab:

1. Navigate to Settings.
2. Head to General.
3. Access “Power”.
4. Choose “Restart” or “Shut Down”.
5. Reboot your device shortly after it turns off.

Especially during the reboot, more power could be consumed from your device’s remaining electrical charge.

Plug your mobile into the charger if it is running low on battery.

Note: Let your phone charger be at least 50% before proceeding with our next solution!

Solution #2 Toggle the Mobile Data Feature ON/OFF

On each smartphone, there is the Mobile Data Function, which enables your mobile device to connect with the cellular network.

If there’s an issue with this function, your mobile won’t be able to connect to the internet and therefore the network will be unreachable.

Follow these instructions to toggle the Mobile Data ON/OFF:

1. On your mobile, navigate to Settings.
2. Head to “Cellular”.
3. Press “Mobile Data”.
4. Hit the Activation Slider once, to toggle the feature OFF.
5. Wait for 60 Seconds while the feature is off.
6. Toggle the Mobile Data to ON by pressing the Slider.
7. Test…

It may take a couple of seconds for your mobile device to reconnect with the network.

You could track the network signal by looking at the Indicator in the top-right of the screen.

Note: Ensure that the mobile data’s slider is in green colour (which means it’s enabled).

Solution #3 Reconnect to O2 Cellular Network

Chances are that your mobile device got Disconnected from O2’s cellular network!

This is an often occurrence, especially when taking out the SIM card or adjusting the carrier or network settings.

There’s a simple way to get your mobile device to reconnect to the O2 cellular network and get the mobile data working again.

Let’s learn how to connect it:

1. Launch the Settings App on your mobile.
2. Navigate to Connections.
3. Next, press “Mobile Data”.
4. Go to “Mobile Networks”.
5. Choose “Network Operators”.
6. Press the Search Field at the top of your screen.
7. Type “O2”.
8. Wait for the results to appear.
9. Select the O2 Cellular Network and press “Connect”.
10. Wait…

It may take 1 up to 2 minutes for your mobile device to reconnect with the O2’s cellular network.

If the cellular connection process fails, it means that O2 is unavailable for the time being.

Note: If your device connects successfully, the signal will occur in the cellular indicator.

Solution #4 Update the Carrier Settings

Keep in mind that Carrier Settings Update is a setting only available for iOS devices!

If you own an Android, you’ll have to check your operator’s website and learn if there are any new carrier setting updates for your device.

As for iPhones and other iOS devices that support cellular, there’s a system setting that will allow you to update those settings.

Let’s learn how to update the carrier settings on both iPhone and Android:

Android:

1. Navigate to your Provider’s Website.
2. Sign in with the Delivered Credentials.
3. Go to “Carrier Updates”.
4. Select the Latest Update Script.
5. Download and install the update on your PC or Mobile Device.
6. Follow the Provided Instructions to apply the update.

iPhone (iOS):

1. Go to Settings.
2. Navigate to General.
3. Press “About”.
4. Select “Carrier Settings”.
5. Choose “Carrier Update”.
6. Follow the instructions.

If your mobile device goes into an update, make sure not to cancel the process or turn off the device. This may cause further problems with the software and settings issues.

Note: If on iPhone, connect it to WiFi until the cellular update has been completed.

Solution #5 Reinsert the SIM Card

If there’s an issue with the O2 Mobile SIM Card of your device, reinsert it into the Sim Tray.

Perhaps some debris is blocking the contact of your SIM card with the tray and this causes mobile data issues.

What you should do is take out the SIM card from your mobile device and from the SIM tray and reseat it inside, correctly.

Let’s learn how to reinsert the SIM:

1. Get a SIM Tool to help you eject the tray.
2. Insert the tool into the SIM compartment’s Pinhole.
3. Take out the SIM Tray.
4. Eject the SIM Card out of the tray.
5. Wait for 5 minutes while the SIM is taken out.
6. Using a Slightly Wet Cloth, collect all dust on the SIM card itself and the tray.
7. Put the SIM back into the tray.
8. Plug the tray back into your mobile device.
9. Test…

While the SIM card tray is taken out, make sure that there are no blockages or debris preventing its appropriate connection.

Use the navigational corner of the sim to embed the card properly.

Note: If the SIM doesn’t fit correctly, get rid of the removable sides of the chip!

Solution #6 Reset the Network Settings!

Resetting the Network Settings of your mobile device will definitely solve the mobile data issue you’re experiencing.

Certain configurations and network limitations could prevent your device from hooking with the carrier and therefore activating your mobile data.

Alert: Resetting the network settings will erase all Bluetooth, WiFi and Cellular Data!

How to Network Reset an Android phone:

1. Go to Settings.
2. Navigate to “Cellular”.
3. Choose “Network Data Reset”.
4. Confirm the process.
5. Wait for your Android to complete the reset.

How to Network Reset an iPhone (iOS):

1. Launch the Settings App.
2. Scroll down and click on “Reset”.
3. Choose “Network Settings”.
4. Enter your Device PIN.
5. Press “Confirm”.
6. Wait…

The Network Data Reset will take somewhere between 3 and 5 minutes. For the time of the reset, do not interact with your mobile device, since this could accidentally cancel the process.

Note: Once the network settings are reset, turn on the Mobile Data Feature and test.

That was all of the solutions so let’s summarise everything we’ve reviewed in our guide!

Quick Recap:

Hence, the solution to the O2 mobile data issue is to Power Cycle your mobile device and reinsert the O2 SIM card. Next, toggle the Mobile Data Feature ON and OFF and update the carrier settings. In case nothing helped, perform a Network Reset on the device.

Wrapping Up:

In this guide, we’ve explored why the O2 mobile data not working and the most appropriate solutions available to solve the problem.

We hope that this guide will help in identifying the problem and also with the respective solution.

If you’re still experiencing problems, you should contact O2 Mobile Support for more help!

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