Disable PIN
Enter PIN (By Default is 1234) 
OK.
Q. How do I make the phone ring louder?
A.Profiles
Edit profile
Volume
Ringer
select High
Q.How do I Change the Ringing Tone?
A.Profiles
Edit profile
Ringtone
OK
Q.How do I view the last dialled numbers?
A.Press Upper navigation key select Dialled Call.
Q.How do I assign a key to speed dialing?
A.Names
Speed Dial
Option
Set Entry
Select for number from phone Book Select.
Q.How do I clear my phone's call timer.
A.Call History
Call Timers
Timer Reset 
OK
Q.How do I find my phone's ESN (electronic
44
serial number)?
A. Turn off your phone, Remove the battery from the back of the phone. Your phone's ESN number is printed on the sticker that is on the rear cover, and is labled, "ESN."
Q. How do I find out how many memory locations the phone has?
A.Names
Memory Status
OK.
Q.How do I call my voice mailbox number (Retrieve voice messages)?
A.when your phone alerts you to new voice messages.
Press and hold the 1 key. And follow the instruction to listen voice mail.