默认情况下，android系统会使用后台数据流量，导致系统消耗数据流量过大，需要关闭。

index 4fd0f5f..ea975aa 100755

--- a/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

+++ b/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

@@ -17,6 +17,7 @@

*/

-->

+ 0

true

2147483647

-1

diff --git a/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java b/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

index e40efe8..e1db2eb 100755

--- a/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

+++ b/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

@@ -2552,6 +2552,9 @@ class DatabaseHelper extends SQLiteOpenHelper {

loadIntegerSetting(stmt, Settings.Secure.SLEEP_TIMEOUT,

R.integer.def_sleep_timeout);

+

+ loadIntegerSetting(stmt, Settings.Secure.BACKGROUND_DATA,

+ R.integer.def_background_data);

/*

* IMPORTANT: Do not add any more upgrade steps here as the global,```