![Samsung Galaxy Tab 7.7](http://wmstatic.global.ssl.fastly.net/ml/7091217-2902190.png?width=150&height=320)
Samsung Galaxy Tab 7.7
1 Find "Network mode"
Press Apps.
Press Settings.
Press Wireless and networks.
Press Mobile networks.
Press Network mode.
2 Select network mode
Press GSM/WCDMA (Auto mode), GSM only or WCDMA only.
3 Exit
Press the home icon to return to standby mode.