Let’s face it, supporting mobile solutions isn’t as easy as IT traditionally was in the past. To start with, there are more device types, operating systems, and apps, so there’s a steeper learning curve. Then, users and devices are usually dispersed, and getting hands on equipment to fix it is more challenging. Add in connectivity hurdles and increased security threats, and you have a very complex environment to manage. 

https://www.varinsights.com/doc/how-to-run-a-great-mobile-help-desk-while-keeping-costs-down-0001