Thecontrolstrategy is basedonnine-zone diagram and combined with artificialneuralnetwork, which makes a decision about the change oftransformertapsandcapacitor switching.
Tapping on the preferred network type option, you can select either LTE on its own, or a mix of LTE, GSM and CDMA. According to the videos, the Google phone then taps into your carrier's LTE network if Band 4 is available, and you're good to go.