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  2. Consumer Reports' iPhone 4 Slap Stings Apple -- and ... - AOL

    www.aol.com/2010/07/13/consumer-reports-iphone-4...

    Consumer Reports' stinging rebuke to Apple over the vaunted tech company's iPhone antenna problems ultimately may not deter too many Apple afficianados from buying, but it sure can't hurt Google's ...

  3. Apple Antenna Expert Predicted iPhone 4's Dropped Call Problem

    www.aol.com/news/2010-07-15-apple-antenna-expert...

    Apple (AAPL) CEO Steve Jobs received a heads-up warning about potential iPhone 4 reception problems early in the planning process from the company's senior antenna expert, according to a Bloomberg ...

  4. Rivals to Steve Jobs: Keep Us Out of Apple's Antenna 'Debacle'

    www.aol.com/2010/07/18/rim-to-steve-jobs-keep-us...

    It shouldn't be surprising that rival cell phone manufacturers weren't thrilled when Apple (AAPL) CEO Steve Jobs said the iPhone 4's antenna problems aren't specific to that device but rather are ...

  5. iPhone 4 - Wikipedia

    en.wikipedia.org/wiki/IPhone_4

    This is an accepted version of this page This is the latest accepted revision, reviewed on 4 February 2025. 2010 smartphone by Apple "iPhone 4G" redirects here. For the first iPhone with 4G networking, see iPhone 5. Not to be confused with iPhone 4s. iPhone 4 iPhone 4 (GSM model) in black Developer Apple Inc. Manufacturers Foxconn (UMTS/GSM model) Pegatron (CDMA model) Type Smartphone ...

  6. iPhone 4s - Wikipedia

    en.wikipedia.org/wiki/IPhone_4S

    The iPhone 4s has a stainless steel, dual cellular antenna design, identical to iPhone 4 CDMA. Apple redesigned the antenna in the iPhone 4 CDMA after some original iPhone 4 users reported cellular signal attenuation problems as a result of holding it in certain positions.

  7. Code-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Code-division_multiple_access

    In other words, unlike synchronous CDMA, the signals of other users will appear as noise to the signal of interest and interfere slightly with the desired signal in proportion to number of users. All forms of CDMA use the spread-spectrum spreading factor to allow receivers to partially discriminate against unwanted signals. Signals encoded with ...

  8. Apple giving away free iPhone 4 cases to fix reception problems

    www.aol.com/news/2010-07-16-apple-giving-away...

    At a hastily-called press conference today Apple addressed the iPhone 4 reception issues which many have called "Antennagate" and had led many to call for an iPhone 4 recall. At the event Steve ...

  9. GSM frequency bands - Wikipedia

    en.wikipedia.org/wiki/GSM_frequency_bands

    As a more recent example the Apple iPhone 5 and iPhone 4S support quad-band GSM at 850/900/1800/1900 MHz, quad-band UMTS/HSDPA/HSUPA at 850/900/1900/2100 MHz, and dual-band CDMA EV-DO Rev. An at 800/1900 MHz, for a total of 'six' different frequencies (though at most four in a single mode).