Easy connectivity provisioning for cellular network

A method comprising:

• receiving, by a first network device associated with a Mobile Network Operator (MNO), a first request from a user device to access a network without the user device using any one of one or more MNO profiles stored in an embedded Universal Integrated Circuit Card (eUICC) of the user device;
• determining, by the first network device, whether the eUICC of the user device includes an operational MNO profile that is associated with the MNO;
• when the first network device determines that the eUICC of the user device does not include the operational MNO profile, sending a second request, by the first network device, to a second network device, for information that includes a temporary authentication vector from the second network device;
• receiving, by the first network device, the information from the second network device;
• forwarding, by the first network device, the information to the user device;
• receiving, by the first network device, a third request from the user device to authenticate the user device, wherein the third request includes a portion of the temporary authentication vector;
• and
• authenticating, by the first network device, the user device based on the portion of the temporary authentication vector.