Network circuitry (103, 501-503) within a wireless User Equipment (UE) (101, 401) transmits a registration request to a first Wireless Access Node (WAN) (111, 411, 431, 441) over a wireless communication link (106). In response, the network circuitry (103, 501-503) receives a UE capability inquiry from the first WAN (111, 411, 431, 441) and transmits it to user circuitry (102, 504) within the wireless UE (101, 401). The user circuitry (102, 504) calculates Key Performance Indicator (KPI) information based on the wireless communication link (106), accesses UE capability information of the UE (101, 401) based on chipset and enabled functionality in the UE (101, 401), generates intelligent UE capability information by modifying the UE capability information based on the KPI information, and transmits the intelligent UE capability information to the network circuitry (103, 501-503). The network circuitry (103, 501-503) transmits the intelligent UE capability information to the first WAN (111, 411, 431, 441) and wirelessly exchanges data with a second WAN (112, 415, 432, 441) over a second wireless access link (107) configured based on the intelligent UE capability information to provide wireless communication service for the wireless UE (101, 401).