1<!-- 2 Copyright 2012 The Android Open Source Project 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15--> 16 17# Data Usage Technical Information # 18 19Android 4.0 (Ice Cream Sandwich) introduces new features that help 20users understand and control how their device uses network data. It 21monitors overall data usage, and supports warning or limit thresholds 22which will trigger notifications or disable mobile data when usage 23exceeds a specific quota. 24 25Data usage is also tracked on a per-application basis, enabling users 26to visually explore historical usage in the Settings app. Users can 27also restrict how specific applications are allowed to use data when 28running in the background. 29 30The documentation in this section is intended for systems integrators 31and mobile operators, to help explain technical details they should be 32aware of when porting Android to specific devices. These details are 33summarized below, and the 34[android-porting](mailto:android-porting+subscribe@googlegroups.com) 35mailing list is a good place for further discussion. 36 37 38