How to reset the network settings on my Samsung Galaxy S9

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If you encounter problems with your data connection, or other wireless connections, you can reset the network settings back to default. All of the network settings on your Samsung Galaxy S9 will be reset, including those for Wi-Fi, mobile data and Bluetooth.
1. Swipe up or down to view Apps.
2. Touch Settings.
3. Scroll to and touch General management.
4. Touch Reset.
5. Touch Reset network settings.
6. Touch RESET SETTINGS.
7. Touch RESET SETTINGS.
8. The network settings have been reset.