To set your phone for hearing aid compatibility:
Find it: 
> 
Settings > Call > Hearing Aid > On or Off
In-call options
During an active call, you can press Mute to mute the phone, or press Options to look up contacts, set up a Bluetooth® connection, and more.
When your phone is connected to a Bluetooth device during a call, you may see additional Bluetooth options. When your phone is set to a TTY mode, you may see a TTY setup option.
More calling features
features
Note: Network/Service dependent.
During a call, dial the next number and press 
,
then press 
again.
minute beep
Note: Network/Service dependent.
Set your phone to beep every minute during a call:
> 
Settings > Sounds > Service Alerts > Minute Beep
features
DTMF Tones
Your phone can send Short or Long Dual Tone
Multi Frequency (DTMF) tones for calling card calls or other automated
To set up DTMF tones:
> 
Settings > Call > DTMF Tones
view and reset call timers
Note: Network/Service dependent.
Note: Call timers give you a rough idea of how much call time you’ve used. These figures may not match the time charged by your service provider, as they’re not measured in the same way.
> 
History > Timers
Scroll to and view the times for Last Call, All Calls, Received Calls, Dialed Calls, Roaming Calls, Transmitted Data, Received Data, Total Data, Last Reset, Lifetime Calls, or Lifetime Data Counter.
To reset an individual timer, scroll to the timer and press Reset. When prompted, select Yes to confirm.
To reset all timers, press Reset All. When prompted, select Yes to confirm.
18Calls
