iPhone X Model Numbers and Useability

[CodeSpyder]

Model A1865*

• FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66)
• TD-LTE (Bands 34, 38, 39, 40, 41)
• TD-SCDMA 1900 (F), 2000 (A)
• CDMA EV-DO Rev. A (800, 1900, 2100 MHz)
• UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
• GSM/EDGE (850, 900, 1800, 1900 MHz)

Model A1901*
Model A1901 does not support CDMA networks, such as those used by Verizon and Sprint.

• FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66)
• TD-LTE (Bands 34, 38, 39, 40, 41)
• UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
• GSM/EDGE (850, 900, 1800, 1900 MHz)

• All models

• 802.11ac Wi‑Fi with MIMO
• Bluetooth 5.0 wireless technology
• NFC with reader mode

It looks like Model A1901 is for AT&T, T-Mobile or Virgin. So if you buy an AT&T iPhone X and unlock it, it still won't work with Verizon, but if you buy a Verizon iPhone X and unlock it, it would work with AT&T. I guess I'm understanding that correctly.