|Jul 27, 2013, 03:58 PM||#101|
CDMA is CDMA and has nothing to do with gsm and the phones Verizon still sells (iPhone 4 and 4s)that use infridged CDMA hardware are affected by this ban.
Just so I can have a better laugh can you please tell us all what forms of gsm 3g use CDMA Lol
Its 2 completely different networks
|Jul 27, 2013, 05:56 PM||#102|
The "CDMA" that I and the patent are talking about is not the slang for Verizon's specific implementation, which is really CDMA-2000 1xRTT and 1xEVDO.
We're talking about radios that use the general CDMA method of communicating.
Later iPhones, including Verizon's, used Qualcomm chips. Those are okay because they have a license.
That's why the only devices affected are AT&T's iPhone 3G, 3GS, 4, iPad 3G, iPad 2 3G... all of which used Infineon.
History lesson: back when 2G celluar was just starting, engineers knew that CDMA radios were the best solution for max bandwidth and simultaneous users, especially later on for 3G.
That's why the wealthiest and most technically advanced carriers skipped straight to using CDMA radios. That included Verizon and other carriers in Australia, Japan, New Zealand, Korea et al.
It cost more to deploy at first than GSM, but when it came time to update to 3G, it was much quicker and easier for them, since they were already using CDMA type radios and the towers were sited for it.
On the other hand, GSM phones and towers had to ADD A SECOND RADIO SET using CDMA air interfaces (primarily W-CDMA) in order to get 3G... and the carriers often had to rearrange their cells. For AT&T, this was especially difficult and time consuming due to the territory size and cost of adding towers.
On the upside for GSM, they were able to use the extra design time and frequency bandwidth to create even faster implementations of W-CDMA for UMTS-3G, which GSM users enjoy today.
Last edited by kdarling; Jul 27, 2013 at 08:38 PM.
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