Non-working/defective product
- Z2: Both sides cutting in and out
- Z2: One side doesn't work
- Z2: Not found by source device
- Z2: No sound from the headset connected to the device
- Z2: Muffled, distorted sound
- Z2: Very loud / quiet sound, lack of bass / treble
- Z2: Hissing, static noise
- Z2: ANC doesn't work
- Z2: Charging but not turning on
- Z2: Doesn't charge at all
- Z2: Short battery life
- Z2: Microphone issue
- Z2: Volume button(s) doesn't work
- Z2: Line-In/AUX Mode doesn't work
- Z2: Defective AUX cable
- Z2: Defective charging cable
- Z2: Other issue