What they are asking is not ok.
I work two HH jobs. The first, they give me a phone to use for everything: email, calls, logging in to an app. The second job gives me an iPad and I use my personal phone to make calls, but I can submit my bill and get $30 monthly.
The data usage you acquire will be considerable as you willl be using GPS, email, and the specific apps (especially since they are always running in the background). Are they assuming everyone has loads of data to blow? What if someone doesn’t have a phone to support the app?
Doesnt sound very smart of the company from a security perspective as well.
i would be weary.