Operating Your Computer 2-31Using the 3G Feature (Optional)3G is the third generation of mobile phone standards and technology after2G. Services include wide-area wireless voice telephony and broadbandwireless data, all in a mobile environment.Unlike IEEE 802.11 networks, 3G networks are “wide area cellular telephonenetworks” which evolved to incorporate high-speed internet access andvideo telephony. IEEE 802.11 networks are short range, high-bandwidthnetworks primarily developed for data.NOTE: Your computer only supports data transmission; voice transmission isnot supported.Installing a SIM CardTo use the 3G feature to connect to the Internet, you need to subscribe to3G service and acquire a SIM card from the service provider. To install theSIM card, follow these steps:1. Turn off the computer and disconnect the AC adapter.2. Carefully place the computer upside down.3. Unfasten four screws and flip open the cover. Be careful not to pull onthe cables connected to the cover.