First introduced in the StarTAC handset, almost all cellular handsets manufactured by Motorola have sidetone, though its level of feedback adjustable by the user.
Motorola | Motorola 68040 | Motorola 68000 | Motorola 68030 | Motorola 68000 family | Motorola 6800 | Motorola Envoy | Motorola Canopy | Motorola 6809 | Motorola 68020 | Motorola StarTAC | Motorola Razr3 | Motorola phone AT commands | Motorola i870 | Motorola DynaTAC | Motorola Droid | Motorola Devour | Motorola Atrix | Motorola 88000 | Motorola 6845 | Motorola 68060 | Motorola 68010 |