InPhonic Engages Grant Thornton as Company's Independent Registered Public Accounting Firm

InPhonic, Inc. (Nasdaq:INPC) announced today that the
Audit Committee of the Board of Directors of the Company engaged Grant
Thornton LLP ("Grant Thornton") as the Company's independent
registered public accounting firm to audit the Company's financial
statements and internal control over financial reporting for the year
ending December 31, 2005.
   "Grant Thornton's competitive fee structure makes this a
compelling decision for InPhonic as we continue to execute across our
business," said David A. Steinberg, InPhonic's chairman and chief
executive officer. "Having a firm with the experience, reputation and
expertise that Grant Thornton brings reflects our commitment to
ensuring investor confidence."

   About Grant Thornton

   Grant Thornton LLP is the U.S. member firm of Grant Thornton
International, one of the six global accounting, tax and business
advisory organizations. Through member firms in 110 countries,
including 49 offices in the United States, the partners and employees
of Grant Thornton member firms provide personalized attention and the
highest quality service to public and private clients around the
globe. Visit Grant Thornton LLP at www.GrantThornton.com.

   About InPhonic

   Headquartered in Washington, D.C., InPhonic, Inc. (NASDAQ:INPC) is
a leading online retailer of wireless services and products. InPhonic
sells these services and devices, and provides customer service
through websites that it creates and manages for online businesses,
national retailers, member-based organizations and associations under
their own brands. InPhonic also operates Wirefly, a leading mobile
phones and wireless plans comparison site that was awarded "Best of
the Web" by Forbes magazine in 2004. Today, InPhonic owns and operates
one of the top five MVNOs in the United States, Liberty Wireless, and
can deliver a full range of mobility solutions to enterprise clients
through its Mobile Virtual Network Enablement (MVNE) platform. In
2004, InPhonic was selected #1 company of the year on the Inc. 500 -
Inc. Magazine's list of the fastest-growing privately held companies
in the United States. For more information on the company, its
products and services, visit the InPhonic Corporate Web site at
www.inphonic.com.

   "Safe Harbor" Statement - Under the Private Securities Litigation
Reform Act of 1995, this press release may contain forward-looking
statements that involve risks and uncertainties. Important factors,
which could cause actual operating results to differ materially from
those in the forward-looking statements, are detailed in filings with
the Securities and Exchange Commission made from time to time by the
Company. This press release and statements are current as of the date
of the individual announcements and the Company undertakes no
obligation to publicly release any revisions to any forward-looking
statement to reflect events or circumstances after the date thereof or
to reflect the occurrence of unanticipated events.