28 29About the optional WWAN ModuleThe i�roc® Ci70 -Ex mobile computer supports two types of cellular technology:• CDMA• UMTSNote:Your Flexible Network Radio mobile computer supports both CDMA and UMTS tech-nology� Your Flexible Network Radio does not support Network Information and TimeZone (NITZ) messages to automatically set the system time�Cellular features on the computer include data connectivity� You can also use a Blue-tooth headset or hands-free kit for voice over IP (VoIP) applications�After you turn on the WWAN module and activate service with your wireless carrier, youcan customize the WWAN features and network settings�Activate the UMTS ModuleYou use a SIM card to activate the UMTS WWAN module on your computer� You canpurchase the SIM card from your network provider�1 Press the Power button to turn off the computer�2 Unscrew the battery’s screw using a torx scredriver� Lift lower part of thebattery to release it from the computer�3 Remove the four Phillips screwsand open the card access door�5 Slide the SIM card into the slotin the card access door�4 Slide the SIM card door to theleft to unlock it and open the door�6 Close the SIM card door and slideit to the right to lock it in place�7 Close the card access door� Then release cover plate and fasten thefour screws�8 Install the battery. Press down firmly on the bottom of the battery.Then tighten the torx screw�9 Press the Power button� The computer cold boots�Activate the CDMA ModuleTo activate the CDMA radio module in your mobile computer, you need to contact yourwireless carrier and set up an account for each mobile computer� The following tablelists the carriers that ecom instruments currently supports� If your carrier is not listedin the table, please contact ecom instruments product support to see if it is now sup-ported�Currently Supported CarriersCountry CarriersUnited States AT&T, VerizonTurn the WWAN Module On and OffBefore you can start using your WWAN module, you need to enable it� You can use Wire-less Center to enable and disable your WWAN connectivity, as well as Bluetooth andWi-Fi communications�1 Tap Start > Settings > Connections > Wireless Center�2 Tap Phone to turn on the WWAN module3 (Optional) To configure the WWAN module, tap Menu in the tile bar at the bottomof the screen�4 Tap OK when you are done configuring the options.5 Tap OK to close Wireless Center�About Switching Network CarriersYour Flexible Network Radio-enabled i�roc ® Ci70 -Ex, or mobile computer contains ahighly configurable WWAN platform. When you switch network carriers, or perform aclean boot, you need to set your cellular carrier, and your network connection�Note:Your cellular carrier and network connection are set independently of each other�If you select a cellular carrier that is not supported on your current network connec-tion, you must manually switch your network connection�About the Network ConnectionNote: When you perform a clean boot, the selected carrier will default to generic UMTS�When you perform a clean boot, all user-created network connection entries are de-leted, and only the generic UMTS remains. After you perform a clean boot, you can findmore information about generic UMTS by tapping Start > Settings > Connections > Con-nections > Tasks tab > Manage Existing Connections > Modem tab�Your UMTS connection entry can be automatically built from your carrier issued SIMcard� To automatically recreate your network connection, install your SIM card andtap Start > Settings > Connections > Connections > Tasks tab > Automatically configureconnection�Switch Network CarriersUse the Carrier Selection application to quickly change your WWAN radio network car-rier on your Flexible Network Radio-enabled i�roc® Ci70 -Ex, mobile computer�1 Tap Start > Settings > Personal > Carrier Selection�2 From the Carrier drop-down menu, select the new carrier and tap OK�A dialog box appears asking if you want to switch carriers�3 Tap Yes to switch carriers�