1# user_grant Permissions for System Applications 2 3Before requesting permissions for your application, read and understand the [permission request paths](determine-application-mode.md) and this topic to determine the permissions required. 4 5> **NOTE** 6> 7> - The permissions listed in this topic are available to system_basic or system_core applications, but not to normal applications. 8> - The authorization mode of these permissions is user_grant. 9> - Applications of a lower APL can request these permissions via [Access Control List (ACL)](app-permission-mgmt-overview.md#basic-concepts-in-the-permission-mechanism). 10 11For details about the process for requesting permissions, see [Workflow for Requesting Permissions](determine-application-mode.md). 12 13## ohos.permission.READ_WHOLE_CALENDAR 14 15Allows an application to read all calendar information. 16 17**Permission level**: system_basic 18 19**Authorization mode**: user_grant 20 21**Enable via ACL**: true 22 23**Valid since**: 9 24 25## ohos.permission.WRITE_WHOLE_CALENDAR 26 27Allows an application to add, remove, or edit calendar events. 28 29**Permission level**: system_basic 30 31**Authorization mode**: user_grant 32 33**Enable via ACL**: true 34 35**Valid since**: 9 36 37## ohos.permission.GET_INSTALLED_BUNDLE_LIST 38 39Allows an application to obtain the list of installed applications. 40 41**Permission level**: system_basic 42 43**Authorization mode**: user_grant 44 45**Enable via ACL**: true 46 47**Valid since**: 10 48 49## ohos.permission.ANSWER_CALL 50 51Allows an application to answer incoming calls. 52 53**Permission level**: system_basic 54 55**Authorization mode**: user_grant 56 57**Enable via ACL**: true 58 59**Valid since**: 9 60 61## ohos.permission.MANAGE_VOICEMAIL 62 63Allows an application to access messages in the voice mailbox. 64 65**Permission level**: system_basic 66 67**Authorization mode**: user_grant 68 69**Enable via ACL**: true 70 71**Valid since**: 8 72 73## ohos.permission.READ_CALL_LOG 74 75Allows an application to read call logs. 76 77**Permission level**: system_basic 78 79**Authorization mode**: user_grant 80 81**Enable via ACL**: true 82 83**Valid since**: 8 84 85## ohos.permission.READ_CELL_MESSAGES 86 87Allows an application to read cell broadcast messages received by the device. 88 89**Permission level**: system_basic 90 91**Authorization mode**: user_grant 92 93**Enable via ACL**: true 94 95**Valid since**: 8 96 97## ohos.permission.READ_MESSAGES 98 99Allows an application to read messages. 100 101**Permission level**: system_basic 102 103**Authorization mode**: user_grant 104 105**Enable via ACL**: true 106 107**Valid since**: 8 108 109## ohos.permission.RECEIVE_MMS 110 111Allows an application to receive and process MMS messages. 112 113**Permission level**: system_basic 114 115**Authorization mode**: user_grant 116 117**Enable via ACL**: true 118 119**Valid since**: 8 120 121## ohos.permission.RECEIVE_SMS 122 123Allows an application to receive and process SMS messages. 124 125**Permission level**: system_basic 126 127**Authorization mode**: user_grant 128 129**Enable via ACL**: true 130 131**Valid since**: 8 132 133## ohos.permission.RECEIVE_WAP_MESSAGES 134 135Allows an application to receive and process WAP messages. 136 137**Permission level**: system_basic 138 139**Authorization mode**: user_grant 140 141**Enable via ACL**: true 142 143**Valid since**: 8 144 145## ohos.permission.SEND_MESSAGES 146 147Allows an application to send messages. 148 149**Permission level**: system_basic 150 151**Authorization mode**: user_grant 152 153**Enable via ACL**: true 154 155**Valid since**: 8 156 157## ohos.permission.WRITE_CALL_LOG 158 159Allows an application to add, remove, and edit call logs. 160 161**Permission level**: system_basic 162 163**Authorization mode**: user_grant 164 165**Enable via ACL**: true 166 167**Valid since**: 8 168 169## ohos.permission.CUSTOM_SCREEN_CAPTURE 170 171Allows an application to capture screen information. 172 173With this permission, the application can perform operations such as taking screenshots and recording on-screen information. Currently, this permission is available only to applications running on tablets and 2-in-1 devices. 174 175**Permission level**: system_basic 176 177**Authorization mode**: user_grant 178 179**Enable via ACL**: true 180 181**Valid since**: 14 182