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Disabling Data Services
1.
Press Home key > tap > Settings > SIM management > Data
connection, then tap Off.
Switching Network Modes
1.
Press Home key > tap > Settings > More > Mobile networks >
3G service >Network Mode.
2.
Select one of the following: GSM/WCDMA (auto mode), WCDMA
only, or GSM only.
Switching Networks
1.
Press Home key> tap > Settings > More > Mobile networks >
Network operators. The phone automatically searches for all available
networks.
2.
Tap the SIM card you want to set
。
3.
Tap a network to register manually, or tap Select automatically.