Apparatus and methods are provided for sim-less subscription mechanism for mobile cellular networks. In novel aspect, the mobile device supporting the e-SIM is provisioned with the assistance the UE by obtaining subscription information from the UE. In one embodiment, UE retrieves an ID from the mobile device. The UE sends a subscription request to the e-SIM platform, wherein the subscription request includes information of the retrieved ID of the mobile device and the subscription information of the UE. In another embodiment, the mobile device retrieves subscription information from the UE. The mobile device sends a subscription request to the e-SIM platform, wherein the subscription request includes information of the subscription information retrieved from the UE and the ID of the mobile device. The mobile device receives a subscription response from the e-SIM platform and enables the mobile device through mobile device's e-SIM based on the subscription response.