ENGLEWOOD, CO--(Marketwire - April 7, 2011) - Evolving Systems, Inc. (NASDAQ: EVOL), a leading provider of software solutions and services to the wireless, wireline and IP carrier market, today announced that Claro, the largest mobile operator in the Americas, recently went live with the Company's Dynamic SIM Allocation™ (DSA) solution to help streamline its SIM card supply chain logistics and optimize its telephone number inventory.

The solution was delivered by Evolving Systems in partnership with Gemalto, the world leader in digital security.

Claro chose to implement Evolving Systems' DSA solution following a stringent Request for Proposal (RFP) process. This involved an industry-wide evaluation of possible solutions, using solution functionality, flexibility, and vendor experience as key selection metrics.

As a result of Claro's fast growth, and in order to comply with countrywide number utilization regulations imposed by ANATEL, Brazil's telecommunications regulator, Claro was faced with the urgent need to optimize its SIM card provisioning process in a very short time frame. In addition, Claro has to operate under a regional numbering plan, which can be hampered when SIM cards are pre-provisioned. Implementation of Evolving Systems' DSA solution will help address these issues.

"This win represents a key milestone in our emerging partnership," says Rodrigo Serna, Vice President Telecommunication for Latin America, Gemalto. "DSA will effectively enable Claro to continue its exponential growth and meet regulatory requirements, all while delivering an enhanced customer experience to the end-user. We are delighted to be working on this important project with Evolving Systems."

"We are extremely pleased that, working alongside Gemalto, we have been able to bring the DSA solution into live production at Claro," says Thad Dupper, Evolving Systems' CEO and chairman. "This success proves that the combined offering of Evolving Systems' market leading technology and experience with Gemalto's strong local presence represents a valuable business proposition for operators in the large and competitive Brazilian market."

About Claro
Claro is a leading wireless carrier in Brazil. It operates nationally and currently serves more than 51 million customers.

Claro is a leader in the offering of innovative content and services, in addition to digital infrastructure and coverage with GSM and 3G technology for more than 3,540 cities in Brazil. The carrier has roaming agreements in 160 countries for voice services and 140 countries for data services. Claro is controlled by América Móvil, one of the five largest wireless telecommunications groups in the world. In the corporate responsibility area, Claro maintains the Institute Claro, which aims to structure its social investment and encourage the use of new technologies in education. More information about Claro: www.claro.com.br/imprensa

About Evolving Systems®
Evolving Systems, Inc. (NASDAQ: EVOL) is a provider of software and services to more than 70 network operators in over 40 countries worldwide. Its portfolio includes market-leading products for Service Activation, Service Verification, Dynamic SIM Allocation, Number Portability, Number Inventory, M2M and Mediation solutions. Founded in 1985, the Company has headquarters in Englewood, Colorado, with offices in the United Kingdom, India and Malaysia. Further information is available on the web at www.evolving.com.

This news release contains "forward-looking statements" within the meaning of the United States' Private Securities Litigation Reform Act of 1995, based on current expectations, estimates and projections that are subject to risk. Specifically, Evolving Systems' statements about the impact and ability of Evolving Systems' solutions to handle future needs of the customer described in this press release, or other customers, are forward-looking statements. Readers should not place undue reliance on these forward-looking statements, and Evolving Systems may not undertake to update these forward-looking statements. Actual results could differ materially because of many factors, such as internal budgeting changes of customers, the impact of competition and the general state of the telecommunications industry. For a more extensive discussion of Evolving Systems' business, please refer to the Company's Form 10-K filed with the U.S. SEC on March 8, 2011, as well as subsequently filed Forms 10-Q, 8-K and press releases and the Company's website at www.evolving.com

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Jay Pfeiffer
Pfeiffer High Investor Relations, Inc.