How To Remove Duplicate Contacts on Windows Mobile

Karl L. Gechlik 10-06-2009

remove-duplicate-contacts-windows-mobileI have gone through a new Windows Mobile Device every year for almost 6 years now. I have had horrible incidents working with ActiveSync How To Backup Your Windows Mobile Device Without ActiveSync Read More and my Exchange server, where I had duplicate copies of all of my contacts.


This is a royal pain in the ass, to say the least. I have tried lots of different programs to remove duplicate contacts on Windows Mobile devices in the past and had issues with all of them. They either didn’t work or they caused me more problems then I started with. But Contact Cleaner takes the cake.

This application and was written by Phil Chuang and I discovered it on the Windows Mobile Forum called

You can download the tiny cab file from his website here. The original link requires you to sign up, this one does not.

The application works on Windows Mobile 6.0, 6.1 and 6.5 (for you early adopters). I tried it out on my Windows Mobile 6.5 HTC Fuze.



Simply download the application and save it to your storage card or device. Then, browse to it on your device and run it.

windows mobile duplicate contacts

Upon clicking it, you will be presented with the normal Windows Mobile installation screens. You can install it either to your main memory or your storage card. As you can see, it only uses 106KB of memory.



Once the install is complete, you will find the application in your Start Menu. It does not go into a folder so it should be at the bottom of your list like so:

windows mobile duplicate contact remover

I knew right off the bat that I did not have any duplicates. So, I created some near duplicates before I began to run the application, just to test it out. These contacts just had identical names as other contacts and no information (so they would be easily distinguished).



I left the default options to delete exact duplicates during my scan and hit Start. You can also choose to let Contact Cleaner find your dupes and delete them at the end. But it only deletes exact duplicates, meaning the data has to be exactly the same in both. If one has a second phone number but the first does not, they will not be deleted. This is exactly what I need!

I hit Start and was ready to rock and roll:


It ran through all of my contacts, letting me know if dupes were found as it went along.



Perfect. Just as I hoped, it found my 6 duplicate contacts (that only have the same name) and did not delete them. You can continue on to view and remove duplicate contacts but I decided to duplicate a contact and run it again.


I created an exact copy of this contact and synced my device. I then re-ran the application.


It found and deleted it! Nice. Do you use something to remove duplicate contacts on your Windows Mobile device? Do you have a duplicate horror story you want to share with us? Do so in the comments!

Related topics: Contact Management, Windows Mobile.

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  1. Staci Gullickson
    October 1, 2016 at 12:12 pm

    Useful piece - I am thankful for the insight . Does someone know where my assistant could grab a template permit search version to work with ?

  2. Larry Brown
    January 25, 2010 at 5:41 pm

    I got an email that said that "Jim R" posted a comment here, to which I'd like to reply, but I don't see his post here. He said:

    "Sometimes you want to clear just your Contacts so you can reload with a clean cleared list, not to mention giving or selling your phone to someone else, but want to leave your free apps and utilities on it for the next person"

    I don't see the problem, assuming that you have a computer, Outlook, and a USB cable, all of which you should have if using a Windows Mobile phone. Simply hook the phone to the computer, set up the usual sync partnership (if it's not already set up), then use Outlook on the computer to drop all the contacts (^A, ). If you do this while the phone is connected the contacts will be deleted from the phone. What's hard about that?

  3. Jim R
    January 25, 2010 at 3:54 pm

    Tell us if you like Windows Mobile Sync software Larry. :)

    This sounds like a neat app, but it would be MUCH NEATER if it had the option of DELETING ALL CONTACTS. The reason for this is the only way you can delete all Contacts on Win Mobile is via the Clear Storage app, which deletes ALL your memory, including any apps you installed since phone was new.

    Sometimes you want to clear just your Contacts so you can reload with a clean cleared list, not to mention giving or selling your phone to someone else, but want to leave your free apps and utilities on it for the next person.

    I understand SKTools commercial application can do this, as well as many other phone management/cleaning/maintenance tasks.

  4. Larry Brown
    June 30, 2009 at 7:11 am

    A smartphone that can't be backed up to the computer without hosing your data is worse than useless. I have a smarthphone running that crap M$ garbage excuse for an OS. I started with Activesync on XP. Then I went to the horrible "Windows Sync Center" (WSC) on Vista. After totally deleting the data on my phone several times, I found that WSC is totally stupid and can not sync the phone data in any intelligent way. Regardless of what option you set, the data on the computer overwrites the data on the phone, which is usually disastrous. To deal with it, you have to totally delete the sync relationship from the computer so that when you hook up the phone the computer doesn't recognize it. Then the computer will grab the data from your phone. It's utter crapware. On top of that, it won't sync contacts unless you install crap-bloatware Outlook. And when you do that? Then it duplicates any contact you've edited on your phone since the last sync. All M$ software is crap, but Windows Mobile and associated syncing systems are utter crap. Avoid.

  5. Mobile Developer
    June 25, 2009 at 9:27 am

    Thank you for this detailed information on the contacts cleaner app. Whether you use windows mobile, android, iphone, etc you definitely have the same type of issues that can occur for some people. Thanks again.