How to configure output to .csv?

Hello RichDadufalza,

You are experiencing problems with your CSV output because your $results collection does not contain all of the properties that you selected.

It contains only:

1. Identity
2. DeviceType
3. DeviceOS
4. LastSuccessSync
5. LastSyncAttemptTime
6. LastPolicyUpdateTime
7. LastPingHeartbeat
8. ClientType

and not:

1. Name
2. UPN
3. FriendlyName
4. DisplayName
5. ClientVersion
6. DeviceId
7. DeviceMobileOperator
8. DeviceModel
9. DeviceTelephoneNumber
10. DeviceType
11. FirstSyncTime
12. UserDisplayName

Your resulting object is missing 12 properties.

Quick adjustment of your script that will give you some output:

$credentials = Get-Credential -Credential blank@blank.onmicrosoft.com
Write-Output "Getting the Exchange Online cmdlets"

$session = New-PSSession -ConnectionUri https://outlook.office365.com/powershell-liveid/ `
-ConfigurationName Microsoft.Exchange -Credential $credentials `
-Authentication Basic -AllowRedirection
Import-PSSession $session

$csv = "C:\temp\MobileDevicesStatistics.csv"
$results = @()
$mailboxUsers = get-mailbox -resultsize unlimited


foreach($user in $mailboxUsers)
{
    $UPN = $user.UserPrincipalName
    $displayName = $user.DisplayName

    $mobileDeviceList = Get-MobileDevice -Mailbox $UPN

    foreach ($Device in $MobileDeviceList) {
        $Stats = Get-MobileDeviceStatistics -Identity $Device.Guid.toString()
            
        $properties=[ordered]@{
            Name=$displayName
            UPN=$UPN
            Identity = $Device.Identity -replace "\\.+"
            DeviceType = $Device.DeviceType
            DeviceOS = $Device.DeviceOS
            LastSuccessSync = $Stats.LastSuccessSync
            LastSyncAttemptTime = $Stats.LastSyncAttemptTime
            LastPolicyUpdateTime = $Stats.LastPolicyUpdateTime
            LastPingHeartbeat = $Stats.LastPingHeartbeat
            ClientType = $Stats.ClientType
        }
        $results += New-Object psobject -Property $properties

    }
}

$results | Export-Csv -notypeinformation -Path $csv

Remove-PSSession $session

Hope that helps