1## 9.6\. Premium SMS Warning
2
3Android includes support for warning users of any outgoing
4[premium SMS message](http://en.wikipedia.org/wiki/Short_code). Premium SMS
5messages are text messages sent to a service registered with a carrier that may
6incur a charge to the user.
7
8If device implementations declare support for `android.hardware.telephony`,
9they:
10
11*    [C-1-1]  MUST warn users before sending a SMS message to numbers
12identified by regular expressions defined in `/data/misc/sms/codes.xml`
13file in the device. The upstream Android Open Source Project provides
14an implementation that satisfies this requirement.
15