Shortly after the launch of the iPhone 4, the famous "Antennagate". According to Spencer Webb, owner of AntennaSys, the "problem" happened because the single cell antenna was at the bottom of the device, causing problems when in contact with the user's hand since the top antenna was exclusive to the GPS and Wi-Fi.
When Apple announced the iPhone 4 CDMA, Webb believes that the company redid the smartphone's structure, moving the GPS and Wi-Fi to the rear of the device, adding another cell antenna on the top. Thus, the iPhone 4 CDMA would work with two antennas: if one failed the other would be there to do the job, since they could alternate depending on the condition of the interesting signal to note that, even so, Consumer Reports did not recommend the smartphone CDMA of Ma.
However, despite receiving the signal through the upper and lower antenna, it was only possible to transmit through the lower one. But it seems that this has been modified on the iPhone 4S: according to Apple, both antennas receive and send data (GSM and CDMA), using this to solve the problem once and for all. It seems to be the first phone to have this feature, which is a great differentiator, since the antenna continues around the smartphone.
As we reported earlier, too, there is now only one iPhone 4S model for all telecoms: it is a GSM + CDMA hybrid, confirming a number of recent rumors. Only those using the Micro-SIM chip slot, of course, will be customers of GSM operators.