Methods for enhanced UE data transmission for power consumption optimization are disclosed. A UE detects UE conditions and determines a UE traffic characteristic. The UE performs power consumption optimization based on the traffic characteristic. In one novel aspect, based on the UE condition, the UE determines that the traffic characteristic is low priority traffic or mobile originated only traffic. In one embodiment, the UE aligns prescheduled low priority data transmission with mobility management messages, or group multiple low priority prescheduled data transmission together. In another embodiment, the UE reduces NAS retry process upon detecting application triggered low priority traffic. In another embodiment, the UE turns off RF module until next data transmission for MO only traffic. In another novel aspect, the UE detects and sends UE conditions to the network. The network determines a UE traffic characteristic and performs power consumption optimization accordingly.