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How Mobile Phones Work Behind the Scenes

adamengst writes "We seldom think about how our mobile phones actually work, but in this TidBITS article, Rich Mogull pulls back the covers and peels away the jargon to explain why text messages work when voice calls are dropped, why your battery lasts longer in some places than in others, why you're not allowed to use phones on airplanes, why you can be notified of a voicemail message when your phone never rang, and more."

2 of 220 comments (clear)

  1. Re:Already slashdotted! by electrictroy · · Score: 4, Insightful

    >>>Or why a text message can get through when a call can't?

    This is no great mystery. A test message can just sit in a buffer until your phone is within broadcast distance, and then it's sent. But a call has to be done in realtime; if reception is poor the caller gets a busy signal (and then send a text instead).

    --
    The government is not your daddy. Its purpose is not to raid middle-class neighbors' wallets and give it to you.
  2. Re:wrong audience, buddy by Kenshin · · Score: 5, Insightful

    why you're not allowed to use phones on airplanes
    One crash in light aircraft ages ago suggested possible connection, unlikely.

    How about "You're a loud-talking asshole and you're enclosed in a tight, cylindrical object for several hours with a couple of hundred other people who don't want to hear about your stupid business plan."

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    Does it make you happy you're so strange?