how to design a cell phone contacts app?

Question

Arnab · Accepted Answer

Phone Contacts App:

Core Benefit: 
A single place for aggregating and quick searching of phone contacts.
Sync contacts to/from other platforms/devices

Types of contacts: 
Name
Personal Info
Mobile Number
Email Address

How does it work:
1. User can add a new contact
2. User can update a new contact
3. Get contact from social networks/email accounts
4. Contact Synced from other platform
5. Send contacts between two devices through the app over wi-fi/bluetooth

Anonymous · Answer

Contacts App for a mobile phone:

What are the Actions that should be available to a user?

1. Find a contact 
- Basic: Search/ browse
- Advanced: Frequently contacted list/ Recent calls/ Favorites/ Groups/ Voice Search/ Quick Shortcuts in basic phones... 

2. Manage contacts: Add/ Edit/ Del contact
3. Manage contact lists: Sync contact list
4. Actions on contact:
- call, share, share content, msg, .. 
- Sync contact info/ updates: across devices, platforms, services/ apps.. 

What is the Core Entity? Contact

What are the key Attributes? 
Name
Phone, Phone type (multiple rows)
Company if needed
Email Id if avlbl
Photo if avlbl
Additional info avlbl from other synced apps

Other Advanced features (good-to-have): 
* Integrations across all apps/ devices/ platforms
* Easy sharing of content/ info with a contact
(not just text messaging)
* Classification into groups
* Backup of contacts app data

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