Simple tool to see and delete duplicate contacts In Android Mobile. You can see a list of contacts sorted by name or by number and you can select which to delete.
The duplicate contacts are automatically selected. The removed contacts are saved on vcf file on sdcard. Thanks to Abdullah Al-Jaser for the Arabic version. Thanks to Ahmet Buğra Aydın for the Turkish version. Thanks to Hagai Bloch Gadot for the Hebrew version
All you need to do is launch Simpler Merge Duplicates and the app scours your phone contacts and draws up a list of potential matches (based on both details and names). You then have the option to review them and choose the ones you want to go through with before confirming.
Google is rolling out a new Contacts interface for the web, which you may or may not have yet, but the process is similar in both cases. Click on the Find duplicates link on the menu on the left and Google looks for separate entries that share common details (like names or mobile phone numbers).
When you see the results appear, you can click Merge to join up a particular group of contact cards or Merge all to perform the procedure on all of them. Alternatively, you can manually select contacts from the main list using the tick boxes, then merge or delete them using the icons at the top.