One of the most important feature-uri but Android operating system (or ale smartphones, in general) is the possibility of a synchronize contacts from different sources like Facebook, Twitter and Google with those from telephone, in this way users ensure that they will not have to reintroduca manual the contacts in Adress Book whenever they change the phone or do reinstallation/software upgrade or simply will return to Factory settings its. There is, however Duplicate contacts (one of which contains a phone number and an e-mail address, and the other to contain another phone number, the same person, and its contact image).
Fortunately, there are solutions for this little (or big, depending on how things are) synchronization of contacts, namely combination of duplicate contacts, either Google Contacts, either using certain Android applications.
How can we combine Duplicate contacts from Android using Google Contacts
How the majority of users of Smartphone-uri cu Android I get used to it synchronize contacts in the phone with Google accounts, a simple way to get rid of duplicate contacts is their combination in Google Contacts.
To do this users must log with the user used on the Android smartphone in Home Page to Google Contacts, then click on My Contacts to display all synchronized contacts Between the disposition and the Google account.
Then you need to be selected (optional, or you can use order directly for my contacts) GRup the contacts that you want to scan for identification of duplicate contacts, click on the button More, then select the option Find & merge duplicates (You can Select duplicate contacts manually and select the option directly Merge).

If duplicate contacts are discovered, they will be listed in a pop-up and users will be able to decide what contacts they want to combine. The modification will also take place on the phone after the following synchronization.

How can we combine duplicate contacts directly from the Android phone
In order to combine duplicate contacts directly from the phone, users will need the help of certain Android applications which can fulfill this task. One of these applications is and Go Contacts EX.
Go Contacts EX It's a contact manager and free dialer for the Android operating system (its main role is to customiza smartphone-ul, replacing the manager of implicit contacts) which also contains an interesting feature, namely that of a Search and combine duplicate contacts from the phone.

After installing the application, users must select the button Merge, then to select according to what parameters to look for duplicate contacts: name, phone numbers or e-mail addresses.
After the duplicate contacts are identified and displayed, users can select what contacts they want to combine. Also if they prefer Go Contacts Ex contact manager default, I can use it as its reliable alternative.

Download Go Contacts EX (via Google Play).
STEALTH SETTINGS – How to merge duolicate contacts in Android