A gateway device for providing a dynamic network activation and/or handover is disclosed herein. The gateway device may activate on a first network associated with a primary network subscription identifier and determine to switch to a secondary network associated with a secondary network subscription identifier. The gateway device may disconnect from the first network and activate on the secondary network. The gateway device may access a cached list of networks for the primary network subscription identifier and scan for available networks while active on the secondary network. Based at least in part on the scan, the gateway device may determine that a second network of the cached list of networks is available. In response, the gateway device can disconnect from the secondary network and connect to the second network.