Using The Phone Functions; Your Sim Card - HP iPAQ h6300 Series User Manual

Using the Phone Functions

Use the iPAQ Pocket PC phone functions to make and receive
telephone calls and send and receive SMS (Short Message
Service) and MMS (Multimedia Message Service) messages.
Your mobile phone service provider may also provide other
useful services such as voice mail.
iPAQ Pocket PC phone functions can also be used to connect to
an Internet Service Provider (ISP) or work network so you can
browse the Web and read e-mail. You can connect to the Internet
or work network over GPRS (General Packet Radio Service), or
you can use GSM (Global System for Mobile Communications)
for dial-up access. For information on establishing GSM/GPRS
connections, refer to Chapter 5, "Making Your Connections."

Your SIM Card

A SIM (Subscriber Identity Module) card (also known as a Smart
card) is required to operate the phone features on your iPAQ
Pocket PC. The SIM card is a plastic card embedded with a
computer chip that stores and transacts data between users. After
the SIM card is activated by your mobile phone service provider,
the computer chip will contain information about your phone
number, service, registration information, and contacts, as well as
memory to store speed dial numbers and text or SMS/MMS
messages that you receive.
With the exception of emergency calls, the SIM card must be
inserted into the SIM slot under the battery on the back of the
Pocket PC in order for voice to work.
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