How To Delete Duplicate Contacts On Android Phones
Maintaining the address book on your mobile phone can become a daunting task, especially if you’ve already accumulated hundreds of contact entries. If you own an Android phone, there’s no general set of guidelines to follow in order to clean up your contacts list, but the process can be completed without much fuss (similar to thatused by iPhone owners). The exact menu layout and features may vary depending on your Android phone model and which operating system version it is running.
If you own a mobile device that uses Android’s built-in apps, you should have access to features thatautomatically merge duplicate contacts. If the detection feature somehow misses a few entries that refer to the same individual, you may manually select address book cards to combine into one page. Certain Android phone manufacturers also offer similar functionality through apps they designed themselves, but you may need to go through a series of steps to get it done.

How to consolidate duplicate contacts on most Android phone models
A lot of Android phone brands run Google apps by default instead of ones designed by the device manufacturer or phone carrier. Here’s how you may merge multiple address book listings for the same person on a stock Android device:
Alternatively, you can also launch Google’s Phone app and go to the Contacts tab. If there are any duplicate contacts, a pop-up should appear at the bottom of the screen. Hit “Clean up” to get to the “Merge duplicates” page and follow step 4 listed above. You can also override Google’s duplicate contact detection and manually merge address book entries that you know refer to the same person:

If you’ve made a mistake in merging contacts, you have 30 days to unmerge them (viaGoogle). Open the Contacts app, tap on your profile in the top-right corner of the page, and hit “Contacts app settings.” Then, scroll down to pick “Undo changes,” make the appropriate selections, then tap Confirm. Note that it may take a while for changes to revert to how it was before you merged contacts.
How to merge duplicate contacts on Samsung and Motorola smartphones
Some Android phone brands like Samsung and Motorola will have their own default Contacts app that offers similar ways to get rid of duplicate entries. Similar to Google Contacts, in some cases depending on your phone model and Android version, you will be able to undo the merge process in case you make a mistake or change your mind by going into the merged contact entry and hitting the unlink option from the menu. However, consider the possibility that you may not always have the option to undo changes, so proceed with caution and only select contacts that you absolutely want to combine.
On aSamsung Galaxysmartphone, the steps are as follows:
If you have aMotorolamobile device, here’s the quickest way to merge two or more address book entries for the same person:
If you want to manually do it yourself, long-press on a contact to launch the selection tool, then pick other contact entries to combine with it. Finally, hit the three-dot icon and tap Merge or Link. Note that by default, the new address book listing will use the contact name of the first entry that was selected for merging, but you can always modify it by editing the entry.

How to delete identical contacts on Huawei and Xiaomi phones and use third-party apps to maintain your mobile phone address book
If you happen to own and use aHuaweimobile phone, follow these instructions to deal with duplicate contacts:
The steps are very similar on Xiaomi smartphones (viaVodaphone):
If you’re having issues navigating Google’s or your phone manufacturer’s default Contacts app to find entries that may potentially have the exact same details, you always have the option of downloading a third-party Android app that specifically addresses the problem of a messy address book. Some of the highly rated and most downloaded options on Google Play include Easy Contacts Cleaner, Duplicate Contacts Remover, and Duplicate Contacts Fixer, to name a few. These apps all have easy-to-navigate user interfaces and built-in features that automatically detect duplicate contacts. In addition, they also back up your phone data so you can always undo changes if you want.