Generate A List of All ActiveSync Serial Numbers

Environment: Exchange 2013

Goal: I would like to see all of the ActiveSync device serial numbers (or IMEI's) within my Exchange environment.  

Back Story: I was given a serial number of "12345" by a colleague and I need to determine who is using that phone within our organization.  So I was thinking of compiling a list of all serial numbers and finding it within the list.

Does anyone know a Powershell command to do this?

Thank you for your time!
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FOXActive Directory/Exchange EngineerCommented:
Get-ActiveSyncDevice -ResultSize Unlimited | Select UserDisplayName,DeviceModel,DeviceImei,DeviceOS | Sort UserDisplayName | Export-csv 'yourdesiredfilelocation' -notypeinformation

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zito2000Author Commented:
This is very helpful, thank you.  
The only thing that I just realized is that Exchange does not log iOS device's IMEI numbers, unfortunately.
You wouldn't happen to know any way around that, would you?  

Thanks again.
yo_beeDirector of Information TechnologyCommented:
MDM solutions  is what you need
Here are a few.

zito2000Author Commented:
Thank you both for the help. Greatly appreciated!
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