ZTE Corporation 003Z User Manual

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mobile network services 
Both GSM and WCDMA are supported by your phone. You can configure the 
network settings according to your phone service. 
getting data services while abroad 
1.
  Tap 
/   > Settings > Wireless & networks > Mobile networks. 
2.
  Tick the Data roaming box. 
disabling data services 
1.
  Tap 
/   > Settings > Wireless & networks. 
2.
  Clear the Mobile Network tick box. 
switching network modes 
1.
  Tap 
/   > Settings > Wireless & networks > Mobile networks > Network 
Mode. 
2.
  Select one of the following: GSM/WCDMA auto, WCDMA only, or GSM only.