Office 365 contacts not fully syncing

WiddleAvi
WiddleAvi used Ask the Experts™
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I am dealing with an odd issue. Have a user who has about 14,000 contacts. Outlook and OWA both show the correct amount of contacts. The user has a samsung galaxy phone and it will sync most of the contacts and then stop. Going in to account and telling it to sync does nothing more. I have replicated the issue on multiple samsung phones. When I add the same account to an iPhone it syncs all the contacts no problem. I turned on activesync logging for user and I have a copy of the logs but to be honest I am not sure what to even look for in the logs. There is nothing that stands out to me. I found one microsoft document that mentions this issue and the solution was to set ActiveSync mailbox policy to Unlimited. I checked and this setting is already in place (looks to be the default policy). : https://support.microsoft.com/en-us/help/2563324/current-issues-with-exchange-activesync-and-third-party-device
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I take it you are using the default mail application on the device? If so this looks like a limitation of the app, try another one.

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