A Government Accountability Office review of the mobile device controls of 15 agencies found that a majority did not fully satisfy guidance on keeping inventories of the devices and associated services and monitoring related spending.

GAO said in a report published Thursday that only five agencies managed an inventory of their devices and services for tracking device usage, and only one had documented procedures for catching inefficient usage to control spending.

The agency noted that the needed device records and monitoring procedures work to help agencies identify opportunities for service cancellation, consolidation or transfer to a new service plan to drive cost savings in telecommunications.

According to the report, GAO urges the 15 agencies to follow federal guidance on device inventory management and spending control processes.

It also recommends that the Office of Management and Budget measure agency performance toward goals on mobile cost savings.