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You can select which network modes your phone should use. This selection influences the data speeds you can achieve.
1. Find "Network mode"
Press the settings icon.
2. Select network mode
If you select GSM/WCDMA (Auto mode), your phone 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 phone can only connect to 3G networks.
3. Return to the home screen
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