Huawei Ascend G630-U251 User Guide - Manual (Page 67)

Internet connection
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Restricting automatic data synchronization
Restricting automatic data synchronization helps save data traffic and battery
power. After this function is enabled, you have to manually synchronize your
accounts.
1. On the home screen, touch then the All tab.
2. Under WIRELESS & NETWORKS , touch More… .
3. Touch Data usage .
4. Touch and clear the Auto-sync data check box.