* - http://tizen.org/feature/systemsetting.lock_screen
* - http://tizen.org/feature/systemsetting.incoming_call
* - http://tizen.org/feature/systemsetting.notification_email
-* - http://tizen.org/feature/systemsetting.font
* - http://tizen.org/feature/network.wifi
* - http://tizen.org/feature/network.telephony
*
* <tr> <td rowspan=2> http://tizen.org/feature/systemsetting.incoming_call </td> <td> #SYSTEM_SETTINGS_KEY_INCOMING_CALL_RINGTONE </td></tr>
* <tr> <td> #SYSTEM_SETTINGS_KEY_SOUND_NOTIFICATION </td> </tr>
* <tr> <td> http://tizen.org/feature/systemsetting.notification_email </td> <td> #SYSTEM_SETTINGS_KEY_EMAIL_ALERT_RINGTONE </td> </tr>
-* <tr> <td rowspan=3> http://tizen.org/feature/systemsetting.font</td> <td> #SYSTEM_SETTINGS_KEY_DEFAULT_FONT_TYPE </td> </tr>
-* <tr> <td> #SYSTEM_SETTINGS_KEY_FONT_TYPE </td> </tr>
-* <tr> <td> #SYSTEM_SETTINGS_KEY_FONT_SIZE </td> </tr>
* <tr> <td> http://tizen.org/feature/network.wifi </td> <td> #SYSTEM_SETTINGS_KEY_NETWORK_WIFI_NOTIFICATION </td> </tr>
* <tr> <td rowspan=2> http://tizen.org/feature/network.telephony </td> <td> #SYSTEM_SETTINGS_KEY_ULTRA_DATA_SAVE </td> </tr>
* <tr> <td> #SYSTEM_SETTINGS_KEY_ULTRA_DATA_SAVE_PKG_LIST </td> </tr>