Android - modes of connectivity, device identification and device inter-communication?

Posted by MalcomTucker on Stack Overflow See other posts from Stack Overflow or by MalcomTucker
Published on 2010-05-28T13:06:32Z Indexed on 2010/05/28 16:42 UTC
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Can someone explain a couple of very simple concepts to me - I'm interested in mobile devices running android and how they are identified over networks. Some scenarios:

  • Device is connected over WiFi - presumably the device has a standard IP address as with any host and can communicate with any other android host over TCP/IP (assuming it knows the participating device's IP?
  • Device is connected over bluetooth - how are devices identified in this case?
  • Device is connected over mobile operator's network - this is the one I'm interested in and confused by - is there anyway for two or more devices to discover each other and communicate via the mobile operator's network? How does a device communicate with a backend server in this scenario? In other words, how do apps and devices communicate when not connected to a WiFi network?

Thanks for any advice..

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