问题
How to change iPhone APN (Access Point Name) programmatically?
Or force a 3G/GPRS connection to use certain APN programmatically?
回答1:
Can't be done with the SDK. Third-party apps don't get that level of control over the hardware, especially not the cell modem.
回答2:
browse to unlockit.co.nz from your phone. it can change the apn to any predetermined or custom APN on any unlocked iphone
来源：https://stackoverflow.com/questions/2665356/how-to-change-iphone-apn-access-point-name-programmatically