Duplicate contacts removal recommendations

[Dannydet]

Any suggestions?
Both off accounts and sim...

 

[svim]

Are the contact listings from different email services or the same?

I'd import everything into one place, preferably my Gmail account, and use its 'Duplicates' feature to initially weed out/sort similar entries, and then just sit down and edit/merge those findings, hopefully ending up with a final,cleaned up, master contacts list. I'd also do this on a PC with a decent sized monitor. If you're working on a pretty large number of contact entries it'll be easier to see what you're comparing on a larger screen and easier to edit text with a keyboard and mouse than a smartphone screen with its touch interface.

 

[Adex Bell]

You can the following third-party apps, they let you search easily for duplicate contact and give you an organized and clean contact list:
Duplicate Contacts Fixer
Contacts Optimizer
Merge Duplicate Contacts & Cleanup by Simpler
Duplicate Contacts Remover

 

[KBU2]

If you have a Google account a good way to clean up your contacts is to go here https://contacts.google.com to add/delete any of them.
As for duplicate contacts in your SIM card should change when you update your information in there. These changes may take up to a few minutes to a few hours to take affect.