LG C1100 - Manual (Page 51)

Accessing the Menu
51
GPRS information [Menu 2-6]
You can check the amount of data transferred over the network
through GPRS. In addition, you can view how much time you are
online.
Call duration [Menu 2-6-1]
You can check the duration of Last call and All calls. You can also
reset the call timers.
Data volumes [Menu 2-6-2]
You can check the Sent, Received or All data volumes and Reset
all.