In my experience, Apple will enable/disable the following features by carrier:
- Tethering
- FaceTime over 3G
- 3G, LTE, toggles to turn 3G or LTE on or off
- APN settings
And unlike on Android, where these features just get disabled on the phones locked to/distibuted by that carrier, even unlocked iPhones bought on another continent will lock these features when they see the carrier's SIM card.
- Tethering
- FaceTime over 3G
- 3G, LTE, toggles to turn 3G or LTE on or off
- APN settings
And unlike on Android, where these features just get disabled on the phones locked to/distibuted by that carrier, even unlocked iPhones bought on another continent will lock these features when they see the carrier's SIM card.