For the longest time ever, Apple has relied on Qualcomm for its LTE Modems. However rumors from earlier this year suggested that both Intel and Qualcomm could be supplying the modems, which shouldn’t really be surprising as Apple has typically favored diversifying their suppliers so as not to have too much reliance on one of them.
AT&T and T-Mobile are GSM-based carriers, while Verizon and Sprint rely on CDMA technology. Intel’s latest modems, as it stands, does not support the old CDMA standard that Sprint and Verizon are still using, hence the fine print. Unsurprisingly neither Apple nor Intel have offered to comment on it, meaning that we’ll most likely have to wait for a teardown of the iPhone 7 in order to see for ourselves.