Samsung Galaxy Tab 7.7
Choose network mode
You can select which network modes your device can use. This setting determines the data speeds you can achieve. Follow these instructions to change network mode.
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.
3G enables you to achieve higher data speeds than when using GSM.
If you select GSM/WCDMA (Auto mode), your device automatically switches between the two network modes provided that you're within range of a 3G network.
If you select GSM only, you can't achieve high data speeds.
If you select WCDMA only, your device can only connect to 3G networks.
If you select GSM/WCDMA (Auto mode), your device automatically switches between the two network modes provided that you're within range of a 3G network.
If you select GSM only, you can't achieve high data speeds.
If you select WCDMA only, your device can only connect to 3G networks.
3. Exit
Press the home icon to return to standby mode.