Quote:
Originally Posted by holymadness
I don't know how to explain the lack of simultaneous voice & data on CDMA models. I am more or less certain the blame lies with squarely with with non-standard North American technologies as the GSM models do not have this problem.
I do wish the phone had been sold as a single model, though. At least global 3G roaming still works without a hitch.
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CDMA does not allow for simultaneous voice and data. However other current LTE phones on Verizon et al use the CDMA for voice and the LTE for data so that both can be done at the same time. To do this they add an antenna.
Apple chose not to add an antenna to allow for this. they talked up how their antenna is able to switch back and forth between radios as if that was a plus and then mentioned not wanting to complicate the phones so they can have just one model for all carriers.
The GSM phones btw will also not be able to run Data on the LTE while using the telephony. In order to do both they will jump down to using 3g for the data and voice.
So adding the extra antenna to ALL models would have allowed for LTE data while talking on the phone for ALL carriers. but that would have effected their margin apparently more than they felt the need to add that capability.