Poor Audio on Calls

If you are experiencing poor audio on calls, try these steps:

If the problem is only with a specific number (not all calls), try calling from another line. The issue may be with the person you are calling if only happening with a specific mobile number.
Increase the device’s volume and ensure it is not muted.
Remove any cases or covers that may be inadvertently covering the microphone or speaker.
Turn off Bluetooth. Device may be connected to an external microphone and/or speaker.
Enable/Disable Airplane mode. This will re-establish connect with the Optimum Mobile network.
Reboot/Restart Device
Update the device to the most current OS/Software version available. Device manufactures release updates to optimize performance.
Change Wi-Fi Calling preferences to Cellular Preferred or Cellular Only.

One-way audio, no audio, or echo:

If you see a headphone icon in the notification bar, plug in a headset, turn off the device, remove the headset, and turn the device on again.
Turn off Bluetooth on the device.
Turn off both the TTY mode and hearing aid options.
Android devices:
- Wipe the cache partition.
Apple devices:
- Turn off Wi-Fi Assist in Setting > Cellular > Wi-Fi Assist (must scroll to bottom)
- Reset network settings in Settings > General > Reset > Reset Network Settings
Uninstall or disable downloaded calling apps, such as Google Voice, Skype, Teams, Zoom, WhatsApp, etc..

Static, low, muffled or garbled audio:

Blow in the microphone hole to get rid of any dust or pocket lint that may be inside.

Headset audio is poor

Wired: With the headset still plugged in, restart the device.
Wireless: Charge the wireless headset completely.
Turn off Bluetooth on the device and turn it back on again.
Make sure the headset successfully pairs.
If the problem continues, contact the device manufacturer concerning their headset support.

If issue persists after following steps above: