"Verizon's certification process for third-party devices like the Google Nexus 7 is a straightforward way to ensure that devices attached to the Verizon Wireless network do not harm the network or other users," Verizon states.
via http://www.tomshardware.com/news/nexus-7-verizon-fcc-4g-lte-open-access-rules,24346.html