How to set up the APN and reset it on Samsung phones?
Samsung devices can configure the APN (Access Point Name) settings automatically depending on the SIM card. You may see a pop-up message during the Setup wizard in the first boot up the SIM card was freshly inserted on the device and the APN is not set yet.
If the incorrect network or wrong APN settings are set, you will not be able to use the internet through the data network and so on.
Samsung sets the provider's APN on its software so if the internet does not work upon setting up the APN from the configuration message of the service provider, then you can still reset it with the default one set and tested by Samsung.
Step 1. From the quick panel open Settings.
Step 2. Select Connections.
Step 3. Select Mobile networks.
Step 4. Select Access Point Names.
Step 5. Select the three vertical dots on the upper right of the screen and select Reset to default.
Step 6: Confirm the process and tap Reset again.
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