How do mobile networks know which apps are using mobile data when they offer things like “Free 2GB for ‘xyz’ app”?

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How do mobile networks know which apps are using mobile data when they offer things like “Free 2GB for ‘xyz’ app”?

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2 Answers

Anonymous 0 Comments

Most of the popular applications have a set of servers that the application communicates with. The mobile networks can see the address of the destination of each data packet and match that with the list of servers used by an application and therefore find out which application you are using. It is similar to how they can have different charges for calling different phone numbers. The reason they can offer cheaper mobile data for certain applications is that they usually offer to host some of the servers in their own network. This means that the data packets do not leave the operators network and they do not have to pay any fees for uplink.

Anonymous 0 Comments

if app xyz only access interface.xyz.com, the mobile network can measure the data volume falling on that server and credit it back into your account.