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10.2  Customizing Your Account 
Synchronization
You can configure background data use and synchronization options for all the 
applications on your phone. You can also configure what kind of data you synchronize 
for each account.
For some accounts, synchronizing is two-directional; changes that you make to the 
information on your mobile phone are made to the copy of that information on the 
web. Some accounts support only one-way synchronize; the information on your 
mobile phone is read-only.
10.2.1  Configuring General Sync Settings
On the 
General sync settings
 screen, do the following:
•  Select or clear the 
Background data
 check box to control whether applications 
and services can transmit data when you are not working with them directly (that is, 
when they are running in the background).
If you clear this option, 
Gmail
 stops receiving new mail, 
Calendar
 stops 
synchronizing events, and so on, until you touch the 
Refresh
 menu item or send 
an email.
•  Select or clear the 
Auto-sync
 check box to control whether changes you make to 
information on the phone or on the web are automatically synchronized with each 
other.
For example, when this option is selected, changes that you make in 
Contacts
 
on the phone are automatically made in Google Contacts on the web.
10.2.2  Changing an Account’s Synchronization Settings
1. On the 
General sync settings
 screen, touch the account whose synchronization 
settings you want to change. The data and synchronization screen opens, 
displaying a list of the kinds of information the account can synchronize.
2. Selected items are configured to synchronize to your mobile phone.
3. Select or clear the check box of information you want to synchronize to the mobile 
phone.