Multi-stack acoustic wave device

A wireless mobile device comprising:

• one or more antennas;
• and
• a radio-frequency module that communicates with the one or more antennas, the radio-frequency module including a multi-stack acoustic wave device having a substrate having one or more electrodes, a first die having a first portion having one or more electrodes and a second portion positioned away from the first portion, the one or more electrodes of the first die being coupled to and electrically connected with the one or more electrodes of the substrate, a second die having a first portion having one or more electrodes and a second portion positioned away from the first portion, the first die being positioned between the second die and the substrate, and the second portion of the first die being coupled to the second portion of the second die, and a packaging structure encapsulating at least a portion of the second die having one or more electrodes positioned away from the substrate, the one or more electrodes of the second die being electrically connected with the one or more electrodes of the packaging structure via one or more electrical connections.