Portable electronic device comprising a folded substrate

A portable electronic device comprising:

• a foldable substrate configured to retain one or more electrical components, wherein the foldable substrate comprises:
• a first unfolding zone, the first unfolding zone having a first thickness, wherein the unfolding zone comprises a first plurality of electrically conducting layers;
• a second unfolding zone, the second unfolding zone having a second thickness, wherein the unfolding zone comprises a second plurality of electrically conducting layers;
• a folding zone connecting the first unfolding zone to the second unfolding zone, the folding zone having a third thickness, wherein the third thickness is less than the first thickness and the second thickness, and wherein the folding zone comprises less conducting layers than the first plurality of electrically conducting layers of the first unfolding zone and the second plurality of electrically conducting layers of the second unfolding zone;
• at least one microphone;
• and
• a housing configured to at least partially surround the foldable substrate and the at least one microphone.

A portable electric device comprising:

• a battery;
• a foldable substrate configured to retain one or more electrical components, wherein the foldable substrate comprises a folding zone connecting a first unfolding zone and a second unfolding zone, and wherein the foldable substrate is configured to, in a folded configuration, at least partially follow an outer surface of the battery in order to at least partially retain the battery;
• at least one microphone;
• and
• a housing at least partially surrounding the foldable substrate, the at least one microphone, and the battery.