Back in 2014, before I left Google, I had bought a nice iPad looking 8" Android based tablet from Walmart which came with free 200MB data monthly plan from T-Mobile. With the sheer amount of applications available, combined with the 4G (not LTE) data plan, I found it to be very productive.
I eventually replaced it with a 10" Amazon Fire tablet. those are lacking in applications, and not cell features, seem to be targeted toward entertainment, shopping, reading, and browsing.
With the M.2 LTE (and GPS) add-on, and millions of applications to go along with it, it will be very productive. Now the shortage of LCD panels is causing them to be not produced.