Using Verizon iPad for use on AT&T???
I'm really puzzled on something here.
According to Apple - The new iPad - View all the technical specifications. there are limited differences between the Verizon and AT&T versions... I've highlighted what is unique to each model...
Wi-Fi + 4G for AT&T model: LTE (700, 2100 MHz)3; UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz)
Wi-Fi + 4G for Verizon model: LTE (700 MHz)3; CDMA EV-DO Rev. A (800, 1900 MHz); UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz)
So, unless I'm missing something, the AT&T version has a second frequency for LTE (2100), which I'm not even sure is its primary LTE frequency. The Verizon version supports all other AT&T frequencies (including its 3G and quasi-4G offerings) and adds on Verizon's own 3G protocols.
If I'm reading this correctly, I'm wondering why someone couldn't just use an AT&T SIM in a "Verizon" iPad (they're not locked - are they???) - recognizing that 4G LTE might be more limited, but having access to everything else AT&T... and still having the flexibility to switch carriers to Verizon.
It obviously can't be that simple, otherwise Apple would sell just the one version... But what am I missing????