You can buy a used Verizon 4G LTE mifi off ebay for $30.
Your unlimited data plan is associated with the sim in your Maxx.
The mifi takes a sim too. Size adapters are easy to find on ebay or Amazon.
I'll let you connect the dots.
Verizon's policy: http://www.phonenews.com/verizon-aff...te-ipad-20053/
Hope this helps.