Device phone number not displaying?

New Contributor II

When i look into inventory I have several devices that are not displaying the device phone number. If the device phone number isn't displaying does this cause any issues with apps? For us it seems that we have issues with the device not getting self service or able to install apps that we push to the device if the device phone number isn't pulling into inventory. 

Is there a way to force inventory to get the device phone number? I have tried to do an inventory update and it still does not pull in the device phone number.


you mean apple device correct?