4 Communication
Working with the Wireless WAN
Depending upon the configuration of your unit, it may have the additional 3G or CDMA wireless
wide area network (WWAN) feature.
After purchasing a data connection plan from your local GSM or CDMA cellular provider, you can
communicate from field to office, send e-mail messages and send text messages.
Note – When browsing the internet using the cellular connection, you must turn off the Wi-Fi (802.11) or the
unit will default to the Wi-Fi to browse.
CAUTION – The following cautions apply:
- DO NOT use your unit while driving a moving vehicle.
- DO NOT remove the WWAN antenna unless directed by support personnel.
- When you are on a plane, in a medical facility or at a gas station where wireless communication devices are
not allowed, go to Wireless Manager to TURN OFF all wireless communications. Simply turning the Power key
off does not turn off these communications.
Installing (or changing) the SIM card
1. Hold down the Power key for about 3 seconds and release to display the power menu. Tap
Replace Battery/SIM to ensure the alarms will not wake up the unit.
2. Remove the hand strap.
3. Turn the latch located above the battery counterclockwise.
4. Remove the battery from the unit.
5. Lift up the plastic regulatory label.
6. Slide the white SIM carriage to the unlocked position (to the right).
Ranger Series Handheld Computer 50
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