1. SMS Strategy Development and Execution Plan Telecom Day April 12th, 2002

2. Agenda SMS Opportunity Strategy and Execution Competitor Analysis

3. SMS Opportunity SMS is a global phenomenon SMS is a global phenomenon and contributes a significant portion of wireless network operator revenues in several countries. Global SMS Messages Total Messages by Region Source: GSM World, EMC, Merrill Lynch, DCI. Billions per Month Source: Merrill Lynch. SMS Usage and Revenue Contribution CAGR:243% Source: GSM World, EMC, Merrill Lynch, DCI. % of Total Revenue Messages per Mobile Sub per Month

6. SMS Opportunity Where is the Money?! Source: GSM World, EMC, Merrill Lynch, DCI. Peer to peer messaging is expected to have the highest business impact in the short run, but content should play an important role in generating awareness and driving adoption. SMS Revenue Breakdown Europe - 2001 Source: JP Morgan/Arthur Andersen—Wireless Data, Feb 2001, DCI research. SMS Revenue Breakdown Forecast Europe - Revenue Forecasts Other Services 10% Text Messaging 90% SMS revenue in Europe is driven by simple person to person text messaging US mobile services adoption lags Europe by 2 years

7. Agenda SMS Opportunity Strategy and Execution Competitor Analysis

9. Strategy and Execution Work Tracks DiamondCluster has been primarily involved in the development of the business case, design and implementation of marketing initiatives and in the co-ordination of SMS dependent activities across all areas of the organization. Program Management Cares Integration SMSC Technical Implementation Sales and Customer Care Training Handset Strategy Construct and Monitor Business Case Marketing Initiatives Inter- Operability

15. Strategy and Execution High Level Promotion Schedule 04-Feb-02 11-Feb-02 18-Feb-02 25-Feb-02 04-Mar-02 11-Mar-02 18-Mar-02 25-Mar-02 01-Apr-02 08-Apr-02 15-Apr-02 22-Apr-02 29-Apr-02 06-May-02 13-May-02 20-May-02 27-May-02 03-Jun-02 10-Jun-02 17-Jun-02 24-Jun-02 01-Jul-02 08-Jul-02 15-Jul-02 22-Jul-02 29-Jul-02 05-Aug-02 12-Aug-02 19-Aug-02 February March April May June July August Purchase Installed Bill per message Enable all users to send SMS Communicate interop and New Pricing Plans Legacy pricing plans Per message pricing Task Phase One - Mass (Sweepstakes) Phase Two - Targeted (Gift/free SMS) SMSC rollout & dependencies Prep Launch Launch Billing for non-plan usage Free month/TBD Launch Prep Phase Three – Targeted (Usage Stimulation) TBD Prep Extend if Successful

18. Strategy and Execution Revenue model: Goal Scenario (cont.) We expect penetration and revenue growth to accelerate in 2002 driven by interoperability, bill per message and improved functionality of new SMSC. Revenue and Penetration Forecast- (2002) Note: usage is presumed to stay constant at current level for 2002, increasing by 50% once interconnection is realized. # Messages per user per month 15 15 15 15 15 23 23 23 23 23 23 23

19. Strategy and Execution Success Fees *Based on forecast from USC business plan Skin in the game was a key selling point for this project and we remain on target for the 100% milestone in either August or September (or both). Time-frame Milestone Incremental Annualized Revenues* Success Fee Maximum Fees to DCI Q3 2002 SMS revenue 100% above current USC forecast July US $2,474,000 US $96,666 US $540,000 August US $2,569,000 US $96,667 September US $2,662,000 US $96,667 Total Success Fee US $290,000  SMS revenue 150% above current USC forecast July US $3,712,000 US $136,667 US $660,000 August US $3,854,000 US $136,667 September US $3,994,000 US $136,667 Total Success Fee US $410,000  SMS revenue 200% above current USC forecast July US $4,949,000 US $176,666 US $780,000 August US $5,139,000 US $176,667 September US $5,325,000 US $176,667 Total Success Fee US $530,000  SMS revenue 300% above current USC forecast July US $7,423,000 US $256,667 US $1,020,000 August US $7,708,000 US $256,667 September US $7,987,000 US $256,667 Total Success Fee US $770,000

20. Strategy and Execution Interoperability Usage Impact ( * ) AT&T experience CHECK (SMS Forum) Opportunity Cost of Delaying Interconnection Million Messages per Month Million Messages per Month 200% 150% Sources: EMC, Merrill Lynch, MobileSpring, DiamondCluster analysis. Sources: DiamondCluster analysis. June 2002 December 2002 ? Illustrative $M Revenue Shortfall Due to Delay In Interoperability Inter-operability Impact on Usage/Revenues Australia UK Interoperability is critical to drive SMS adoption with immediate impact on revenue/usage of up to 200%. Interoperability

21. Strategy and Execution Third Party Deals Interoperability Update Six of top 10 carriers representing 70% of US subscriber base have already signed up with InphoMatch and or MobileSpring. AT&T Wireless Nov 01 17.1M InphoMatch Century Tel Mar 02 0.8M InphoMatch Cincinnati Bell Nov 01 0.5M InphoMatch Cingular Apr 02 21.3M MobileSpring PrimeCo NA NA InphoMatch Sprint Apr 02(?) 12.4M MobileSpring Verizon Wireless Apr 02 28.7M InphoMatch VoiceStream July 01 6.3M InphoMatch Date # of Subs * IC Provider Total US 123.0M 69.85% *3Q01

23. Agenda SMS Opportunity Strategy and Execution Competitor Analysis

27. I-wireless started as a teen brand but has started to expand its base by targeting college students as well. Teens Teens Teens TEXT MESSAGE #1: Party 10:00. Matt TEXT MESSAGE #2: Meet at 6:30 our spot. Jen GIRL: Hey. How was your day? [also said in sign language] GUY signs a response. END TEXT: Send and receive text messages with your phone. Two way Text Messaging now available. Competitor Analysis I-Wireless Marketing Case Study: Teen Commercials TEEN: Hey wait man. You can’t forget this. I like your shoes. Those are shiny shoes. Later, man. May I help you cross the street? ELDERLY LADY: Let go of me. Let me go! TEEN: People say I’m a good person and you know what, I believe them. Have a nice day. Elderly lady : Wha- Chippy, where are you dear? TEEN: I’ve been good. I deserve I-wireless. TEEN: Oh I’m popular now. It all changed pretty quickly. People just need to get to know the real me…. So, Saturday night then. You just gotta know how to present yourself. Script/ Text “ SMS” “ I’ve been good” “ Popular” Ad Target

28. College College/Teens College/Teens BOY: Hey guys, guess who’s finally going out with me? Gretchen! [Tarzan-esque Cheers] FRIEND CALLING: Hey big stud. Did you get lucky yet? GRETCHEN:That depends on how fast you can get here…. I am not to be underestimated. Competitor Analysis I-Wireless Marketing Case Study: College/Teen Commercials TEXT: I have free caller I.D. Your ex-boyfriend will hate this. I have digital prepaid. His complaints will come in clear. I have free text messaging. He’ll even put it in writing. I have 10 ¢ minutes evenings and weekends. In case it takes awhile…to get him to stop…crying. I live by my terms. GIRL: I live by my terms. IVR: Welcome to the I-wireless telemessaging service. To identify yourself as a subscriber, please press #. Please enter your password. Dana Raven, you have new messages. First new message GUY: Hey it’s Chad. Call me. Message deleted. Hey Dana, it’s Chad, the captain of the football team?! Last night was fantastic. Why don’t you give me a— Message deleted. Hey Dana, me again. Uh, maybe, uh, you lost my number or something. It’s 555-653— Message deleted. H ey— Message deleted. Look if you’re not— Message deleted. NARRATOR: I-wireless comes with free voicemail and caller I.D. for those calls you’d rather not pick-up. GUY: I thought you said I was special. Message deleted. NARRATOR I-wireless affordable prepaid digital service. Ad Script/ Text Target “ The Date” “ Ex-boyfriend” “ Quarterback” Radio Ad

29. Competitor Analysis I-Wireless Marketing Case Study: Coasters Target College Students in their “natural habitat” by incorporating pick-up lines into the “I” campaign Drink Coasters

32. Competitor Analysis AT&T Marketing Case Study: Lifestyle Branding AT&T Wireless Services AT&T Wireless Services 2-way Text Messaging NARRATOR: We are meant to lead a wireless life. Now we truly can. Welcome to mLife from AT&T Wireless. NARRATOR: Why do we leave? Why do we keep coming back? Why do we seek adventure, yet long to return? Why do we look forward to reunions when we couldn’t wait to get out of school? Why do we want to be alone sometimes but never lonely? Why do we say there’s no place like home and why can’t we always stay there? Why do we travel to distant places and look for familiar faces? Why can’t we stay connected, yet be free? Can’t we have both? Now we can with mLife, where we will be connected in new and better ways to the people and things we care about. Welcome to mLife from AT&T Wireless. TEXT MESSAGE #1: Beat this: 1:47:10 NARRATOR: Sometimes text says more than talk. Welcome to mLife from AT&T Wireless. TEXT MESSAGE #2: No- beat this! 1:47:05 Script/ Text “ Why?” “ Friendly Rivalry” Ad Product “ Belly Button”