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What is the overhead of a 3G connection to keep a socket open indefinitely

To keep the tcp / ip connection open on the cellular network, should the phone continue to send data?

On tcp / ip over ethernet, you can simply open the socket to send a keep alive message for some time.

Is tcp / ip over 3g ay different?

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Some. Most cell phones do not have a fixed IP address in 3G, especially when moving, so your connections may drop once in a while, even if the connection is otherwise fine.

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No, TCP / IP in 3G is the same old TCP / IP that you know. You can send saved messages to maintain a connection.

Remember that 3G is at the two lower levels of the protocol list, so TCP / IP is independent of other layers.

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Source: https://habr.com/ru/post/1389377/

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