Mobility Fund Phase II (MF-II) will make up to $4.53 billion in support available over 10 years to primarily rural areas that lack unsubsidized 4G Long Term Evolution (LTE) service.  MF-II is critically important to supporting mobile voice and broadband coverage, incentivizing the deployment of mobile wireless service through a reverse auction, and ensuring that 4G LTE service is preserved and advanced in those areas of the country that lack unsubsidized service.

Challenge Process

Under the challenge process framework established by the Commission in the MF-II Challenge Process Order, mobile providers were required to submit current, standardized coverage data on qualified 4G LTE service.  These data will be used, in conjunction with subsidy data from the Universal Service Administrative Company (USAC), to establish the map of areas presumptively eligible for MF-II support (initial eligible areas map).  Interested parties will have an opportunity to challenge an initial determination that an area is ineligible for MF-II support, and challenged providers will then have an opportunity to respond to challenges. 

All parties interested in participating in the challenge process must fill out the Portal Access Request Form in order to receive access the USAC challenge process portal once the portal is live.  For further information on the challenge process, please see the documents linked to below and the tabs above (Data, Documents, Education & Outreach).  Specific inquiries can also be emailed to




Education & Outreach

  • Challenge Process Webinar for State, Local, and Tribal Governments (May 3, 2018)


Wednesday, December 4, 2019