EXHIBIT 99.3 ------------ CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-QSB for the three-month period ended March 31, 2003 of inCall Systems, Inc., a Nevada corporation (the "Company"), as filed with the Securities and Exchange Commission on the date hereof (the "Quarterly Report"), I, Robert Harris, Treasurer and a Director of the Company, certify, pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: 1. The Quarterly Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities and Exchange Act of 1934, as amended; and 2. The information contained in this Quarterly Report fairly presents, in all material respects, the financial condition and results of operation of the Company. /s/ Robert Harris -------------------------------------- Robert Harris, Treasurer, Director (Principal Financial Officer) June 16, 2003