For carrier's that have a large number of user equipment (UE) devices camped on them, the experience of a user equipment devices that utilize a subscriber prioritization identity (SPID) can be of a lower quality than it would be on another lower priority carrier because of the carrier load. Thus, SPID based UEs can be placed on carriers with the best throughput potential in the uplink. To achieve this, a SPID profile for the SPID based UE can be dynamically changed such the SPID based UE can transition to a carrier of better quality. UE devices are grouped per SPID ranges and each SPID has assigned cell carrier priority. In one embodiment, a system optimization network can monitor and detect UE performance on each cell and determine which cells are underperforming and which cells are performing better than other cells.