FSocket::GetConnectionState return "Connected" after *just* created

Development Platform & Builds Mobile
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I created the FSocket instance like below:

FSocket* Socket_;
Socket_ = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->CreateSocket(NAME_Stream, TEXT("TestSocket"), false);

and I tried to get the state of socket like below:

ESocketConnectionState CurrentStatus = Socket_->GetConnectionState();

It works fine at PIE. Editor. It returns ESocketConnectionState::SCS_NotConnected
but when it runs on android device, It returns ESocketConnectionState::SCS_Connected.

Does anyone have similar experience like this? I’m confusing what I did wrong with Socket initialization.
Why the result is different between Editor and Android device?