what are these points?

Discussion in 'General Electronics Chat' started by lokeycmos, Jan 27, 2014.

  1. lokeycmos

    Thread Starter Active Member

    Apr 3, 2009
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    I attached a couple pics of a cell phone I have a question about. its a Samsung galaxy s4 what are the things located in red circles? they look like a test point or connector for external antenna. but the small ones are covered by the rear frame and couldn't possibly connect to anything.
     
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  2. ScottWang

    Moderator

    Aug 23, 2012
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    It seems like high frequency transistor for GHz.
     
  3. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Shielded RF test points.
     
    ScottWang likes this.
  4. ScottWang

    Moderator

    Aug 23, 2012
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    That's why I can't find the similar parts.

    Do you think the testing method is the same like this.
     
  5. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Sorry i don't open DOC files.

    And I'm not an expert on RF test connectors anyway. :)
     
  6. Veracohr

    Well-Known Member

    Jan 3, 2011
    550
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    Sure they could. I'd imagine the larger ones are for quick testing of a particular characteristic by a repair department. The smaller ones, requiring removal of screws to access, are probably involved in either lower-level repair diagnostics, or pre-shipment quality control testing.
     
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