Because of T-Mobile and Verizon, the iPhone 11 supports an LTE band record

After all, the North American A2161 version has to support the exclusive FirstNet band for government employees and emergencey services, AT&T’s band 14, as well as T-Mobile’s vaunted band 71, the long-range 600MHz.
The international type of the three new iPhones includes band 28 that is all the rage in places like Europe, and it has even more – 30 LTE bands – so Apple has you covered in terms of coverage, whichever region you happen to be in.
Apple has achieved this feat by fine-tuning Intel’s newest XMM 7660 modem (there was no time to plan for anything Qualcomm after the lawsuit was settled) that is a tad slower than the Snapdragon X24 one that is in most Android flagships in the US – Cat. 19 and 1.6 Gbps versus Cat.20 and 2 Gbps.
Here are all the models and bands that the iPhone 11, 11 Pro, and the 11 Pro Max are equipped with.