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+# Contacts
+
+## Introduction
+
+The Contacts application is a preset system application in OpenHarmony. The main functions include dial pad, call log view, call log batch deletion, contact list, details view, and contact creation.
+
+### Architecture diagram
+
+![image-20220222110725915](./doc/image/image-en.png)
+
+The application architecture mainly combines MVP and domain-driven design ideas.
+
+## File Tree
+
+~~~
+/Contacts/
+├── doc                                
+├── entry                 
+│   └── src
+│       └── main
+│           └── ets                  
+│               └── MainAbility          
+│                   ├── account        
+│                   ├── call           
+│                   ├── component      
+│                   ├── contact          
+│                       ├── contact     
+│                       ├── entity        
+│                       └── repo      
+│                   ├── dialpad         
+│                   ├── feature         
+│                   |── model            
+│                   |── pages           
+│                   |── presenter      
+│                   |── util         
+│                   └── workers         
+│               └── app.ets             
+│           ├── resources      
+│           └── config.json           
+├── signs                               
+├── LICENSE
+~~~
+
+## Related Repos
+
+[**applications_mms**](https://gitee.com/openharmony/applications_mms)
+
+[**applications_contactsdata**](https://gitee.com/openharmony/applications_contactsdata)
+
+[**applications_call**](https://gitee.com/openharmony/applications_call)