Hello,
Let's try a few troubleshooting steps:
Check network signal is strong (If using mobile data)
If the internet stops working when using mobile data, the first thing that you want to do is to ensure that your S9 is getting a good signal from your network. You have to check that 3G or 4G is enabled to allow a faster broadband connection. For the signal, the device must consistently show at least 3 bars. Any intermittent connection can also potentially give the appearance of total internet absence.
If your S9 has a slow 3G or 4G connection, overall mobile data experience may suffer. In this case, you can skip the rest of the troubleshooting steps below and get help from your carrier right away.
Verify wifi is working (if using wifi)
If you don’t use mobile data at all and rely on wifi only, it’s important that you check whether your wifi is working properly or not. You can use another wireless device (phone, tablet, laptop, etc.) to check. If a second device can connect to the internet using the same wifi, the problem must be on your Galaxy S9. Continue troubleshooting it by following our suggestions below.
If all wireless devices are unable to connect to the internet when on the same wifi network, there may be a problem with the router or your Internet Service Provider (ISP).
Clear system cache partition
Your Android device uses a special cache called system cache to load apps quickly. To check if your device’s system cache has been corrupted and causing trouble, try to clear the cache partition.
- Turn off the device.
- Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
- When the Android logo displays, release all three keys.
- An ‘Installing system update’ message will show for 30 – 60 seconds before the Android system recovery menu options appear.
- Press the Volume down key several times to highlight wipe cache partition.
- Press the Power key to select.
- Press the Volume down key to highlight yes, them and press the Power key to select.
- When the wipe cache partition is complete, Reboot system now is highlighted.
- Press the Power key to restart the device.
- Reset network settings
If the internet was previously working on your S9 and it suddenly disappeared, there may be a network configuration issue. You can reset your device’s network settings to see what happens.
- Open the Settings app.
- Tap General management.
- Tap Reset.
- Tap Reset Network Settings.
- Tap the RESET SETTINGS button to confirm.
- Restart your S9 and check for the problem.
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