Website & Phone:
The difference is that with ConnectED, everything can be done online, with customer support just a click away, so it's especially accomodating to international students (like myself).
Plus, you can adjust anything about your plan whenever you want — whether it's upgrading/downgrading your plan, changing billling information, even suspending your number temporarily (especially useful during Covid-19).
Switching over was a game changer. Highly recommend for anyone considering. Just make sure your phone is unlocked and compatible.