Make your iPhone support Google contacts, right now!
Google Contacts is the default address book provider for all of Google software and devices(Gmail, *droid,etc.).
(The website of Google Contacts: http://www.google.com/contacts.)
Feature List:
1.It is an independent address book App on iOS, and it has a convenient UI likes Apples contacts.
2.It supports multi-account. You can hold multiple Google accounts (unlimited count) in the App.
3.It can migrate contacts content to your iOS devices.
4.It does not gather any personal informations. All of content data only stores in your service provider(Google) and devices.
5.It was developed base on Google Data Protocol (Google native API), and provides more compatibility.
Other Features:
1.Direct call your contacts from iPhone.
2.Synchronous data arranged in groups, do not have to worry about the address book classification confusion.
3.You can edit your contact content locally, and also synchronise to iOS contacts(by using migration assistant).
4.On "Summary" page, you can send email and make phone calls.
5.Address book data on the service providers is a read-only access by default, delete the account and group does not affect the original content.
Possible Issues:
1.Google updated the password authentication methods, provides the "2-step verification”. In order to avoid the password validation fail, you should set an application special password for this App if to use this function. Refer to:
https://www.google.com/settings/security
https://accounts.google.com/b/1/IssuedAuthSubTokens
2.[For Chinese mainland user] Google contacts are downloaded for too long time and timeout. Google’s servers are in the United States, subject to the environment of the Chinese network, the Google’s servers are often blocked. The solution: When a timeout occurs, retry more times.
3.I have to remove the Facebook contacts supporting, because Facebook does not permit other Apps to access contacts.