Applies to: IsatPhone Pro only; October 2011 owner guide, printed pages 17 and 41–42. Not IsatPhone 2.
Match your symptom
| What you see | What to do next |
|---|---|
| Check microphone mute | During a connected call, Options > Unmute cancels microphone mute. Check the mute icon; raising volume changes what you hear, not whether your microphone is muted. |
| Check the listening path | The side volume keys adjust call volume. Note handset, loudspeaker, wired headset or Bluetooth use before comparing an ordinary call. Confirm the wired headset uses the audio port, not the USB port. |
| Distinguish paired and connected | Open Menu > Settings > Bluetooth and inspect Connected devices. The manual requires Connect after pairing; a blue pairing tick alone is insufficient. Use only your trusted headset. To use another, disconnect the current one first. Preserve pairing records; deleting every device or resetting the phone is not the first check. |
Work through these checks
Check microphone mute
During a connected call, Options > Unmute cancels microphone mute. Check the mute icon; raising volume changes what you hear, not whether your microphone is muted.
What the result means: IsatPhone Pro only; October 2011 owner guide, printed pages 17 and 41–42. Not IsatPhone 2.
Check the listening path
The side volume keys adjust call volume. Note handset, loudspeaker, wired headset or Bluetooth use before comparing an ordinary call. Confirm the wired headset uses the audio port, not the USB port.
What the result means: Use a normal call with consent. Stop changing settings if the handset is managed or Bluetooth settings are locked; ask its owner. Keep urgent calls on a working alternative.
Distinguish paired and connected
Open Menu > Settings > Bluetooth and inspect Connected devices. The manual requires Connect after pairing; a blue pairing tick alone is insufficient. Use only your trusted headset. To use another, disconnect the current one first. Preserve pairing records; deleting every device or resetting the phone is not the first check.
What the result means: Use a normal call with consent. Stop changing settings if the handset is managed or Bluetooth settings are locked; ask its owner. Keep urgent calls on a working alternative.
When to stop and get help
Use a normal call with consent. Stop changing settings if the handset is managed or Bluetooth settings are locked; ask its owner. Keep urgent calls on a working alternative.
What to tell support
Pro label, call connection state, who cannot hear whom, mute icon, headset type and Connected devices entry.
Original troubleshooting guidance based on the official sources below. Menu names can change. This is an independent guide, not a manufacturer service bulletin or a bench-tested repair.