LG G4020 - Manual (Page 80)

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Data Information Menu 6.8
You can check the amount of data transferred over the network through the
GPRS information option. In addition, you can also view how much time
you are online.
WAP Information (Menu 6.8.1)
You can check the data volume and the duration through WAP.
External Device (Menu 6.8.2)
You can check the data volume and the duration through GPRS by using
an external device such as a serial port. A cable must be purchased
separately to connect to external device.
Total Data (Menu 6.8.3)
You can check the total amount of data through WAP and an external
device.
Notice GPRS General Packet Radio Service
Recent Calls