[iPhone God App] It was found using the EasyContacts Plus actually

EasyContacts Plus is your all-in-one contact manager

It offers different access/view to your contacts and allows fast finding and editing of contacts:
Views:
- Persons
A list of all contacts. By selecting a contact you get the details with many functions. A similar list with filtered contacts you get from other lists. There you find further functions.
- Companies
Here you find a list of all companies. By selecting a company you get a list of all contacts of this company.
- Grouped
Here you find a list grouped by the selected field. By selecting an entry you get a list of contacts having this property.
- Search
Complete contact list with searchfield in the titlebar.
- Ext. search
Define several filters to see only matching contacts.
- Groups
All groups contained in the selected address-sources. Not all sources support groups.
- Dial list
A list of all numbers dialed with this App. The access to numbers dialed from another app is prohibited by the operating system.
- Favorites
A list of the favorites defined in this app.
- Address-Sources
A list of your address sources. By selecting a source you get a list of contacts in this source.
- Fast Dial
A helpful phone-replacement to dial a number faster. Supports dialing with numbers (2 = A, B oder C).
- Settings
Here you can adjust the way the application works.
- Help
Shows a short explanation

Functions
- Delete
Delete contacts from your addressbook
- Message
write Email or text message
- Copy
New contact with identical properties
- Send
Sending of contact by Email as vCard or plain text
- Move
Move to another address source
- Notes
Edit notes sorted by date
- Groups
Show and edit the groups of this contact
- Favorite
Add a number to the favorites
- Appointment
Make a new appointment in your device calendar
- Modify
Modify the selected property for the shown or selected contacts
- Export
Export the the shown or selected contacts by Email into .csv-format
- Select
Mark several contacts for common editing