Handspring Treo 600 - Manual (Page 16)

Adjusting call volume
While a call is in progress, press the volume buttons on the side of your Treo
to adjust call volume.
A. Volume buttons
What’s my number?
1. Make sure Wireless Mode is on (see page 14).
2. Press Phone
.
3. Press Menu .
4. From the Options menu, choose Phone Info (/I). If your phone number is
not displayed, exit Phone Info, and make sure your SIM card is properly
inserted in the SIM slot. If your phone number still does not appear in
Phone Info, consult your mobile service provider.
A. Look here for your phone number
16 :: Making your first call