Access Point Name - Wikipedia
https://en.wikipedia.org/wiki/Access_Point_Name
An Access Point Name (APN) is the name of a gateway between a GSM, GPRS, 3G or 4G mobile network and another computer network, frequently the public Internet. A mobile device making a data connection must be configured with an APN to present to the carrier.
АПН - Агентство Политических Новостей
https://www.apn.ru/
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What is an APN, and how do I change it? | Android Central
https://www.androidcentral.com/what-apn-and-how-do-i-change-it
The Access Point Name (APN) is the name for the settings your phone reads to set up a connection to the gateway between your carrier's cellular network and the public Internet. Your carrier reads these...