What is an APN?
APN stands for Access Point Name, which is simply a setting that allows you access the Internet on your device. A device’s network can connect to the internet via an Access Point Name (APN). Your device establishes a connection to a carrier after the APN settings are in place. The carrier uses a configured APN network to select the allocated IP address(s) and security settings, as part of this procedure.
APNs are often employed when your wireless service provider is an MVNO (mobile virtual network operator). Depending on the carrier, if the APN field is left blank, Dynamic APN may be an option that will auto-populate the correct access point name based on how the SIM is specified in the carrier account settings.
APN settings can differ between device types, carriers, between prepaid and postpaid plans.
Check with your carrier to find the correct APN for your account and connection.
Examples from carrier websites:
Do not use the settings noted below. Images used for example only and may not match your service.
T-Mobile (USA) example:
Boost Mobile (USA) has different APNs depending on the source of the SIM card.