So here's a question. Apple's site says that you can have 1 of 3 options during setup:
1. Line 1 for voice/texts/data, and line 2 for just voice & texts
2. Line 2 or voice/texts/data, and line 1 for just voice & texts
3. Line 1 or voice/texts/data, and line 2 for just data.
But further down the page also shows the ability to change which number data comes from after setup is completed. My question is, if I have line 1 using voice/texts/data initially, and line 2 for just calls and texts, but later go into settings and change line 2 to be my data number, will that then disable calls on my line 2 number?
No, but it'll disable data on your other line. Otherwise there's a feature that makes the phone use the data plan of the line currently being used for a phone call, then flip back to the main one when the call is over.