The two US carriers won’t offer support for simultaneous voice and data over LTE.
Of the three major U.S. wireless carriers, only AT&T users will be able to talk and surf the web at the same time thanks to the GSM network it uses.
“AT&T customers have the ability to talk and surf simultaneously on the iPhone 5,” the operator announced.
Verizon and Sprint won’t include the feature with the new iPhone.
“The iPhone 5 was designed to allow customers to place a voice call on the Verizon Wireless network, while simultaneously allowing customers access to the Internet over the Wi-Fi,” Verizon said in a statement to CNET.
“The simultaneous voice and data capability on LTE does not apply to the iPhone,” Sprint told the site.
According to The New York Times, this has to do with the iPhone 5′s lack of a third antenna.
An extra antenna is needed in order to allow both LTE data and CDMA voice together.
An Apple spokeswoman told the publication, “It is not yet possible to do simultaneous voice and data on networks that use CDMA for voice and LTE for data in a single radio design.”