UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC. 20549

FORM 10-QSB/A

Quarterly Report Pursuant to Section 13 or 15 (d)of the Securities Exchange Act of 1934

|For the quarterly period ended |  | Commission File Number0-19437
|------------------------------ |  | -----------------------------
|June 30, 2007                  |  |                              

CELLULAR TECHNICAL SERVICES COMPANY, INC.(Exact Name of Small Business Issuer as Specified in Its Charter)

|Delaware                        |  | 11-2962080                          
|------------------------------- |  | ------------------------------------
|(State or Other Jurisdiction of |  | (I.R.S. Employer Identification No.)
|Incorporation or Organization)  |  |                                     

20 East Sunrise Highway, Suite 200, Valley Stream, New York 11581(Address of Principal Executive Offices)

Issuers telephone number, including area code:(516) 568-0100





Check
whether theissuer(1)
filed all reports required to be filed by Section 13 or 15(d) of the Exchange
Act during  the past 12 months (or for such shorter period that the registrant
was required to file such reports), and (2) has been subject to such filing requirements
for the past 90 days. YesXNo
__

Indicate
by check mark whether the Registrant is a shell company (as defined in Rule 12b-2
of the Exchange Act) YesXNo__

4,586,757 Common Shares were outstanding as of
July 9, 2007

Transitional Small Business Disclosure
Format. Yes__ NoX

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This amendment is being filed to correct the Net Income (Loss) per share data for the periods ended June 30, 2007, as contained in the Condensed Consolidated Statement of Operations.

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CELLULAR TECHNICAL SERVICES COMPANY, INC.CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(UNAUDITED)

(in 000s, except per share amounts)

|                           |  | Six Months Ended |        |   | Three Months Ended |  
|-------------------------- |  | ---------------- | ------ | - | ------------------ | -
|                           |  | June 30,         |        |   | June 30,           |  
|                           |  | 2007             |        |   | 2006               |  
|REVENUES                   |  |                  | --     |   |                    |  
|                          
|COSTS AND EXPENSES         |  |                  |        |   |                    |  
|General and administrative |  |                  | 137    |   |                    |  
|                          
|Total Costs and Expenses   |  |                  | 137    |   |                    |  
|                          
|LOSS FROM OPERATIONS       |  |                  | (137   | ) |                    |  
|                          
|INTEREST INCOME            |  |                  | 86     |   |                    |  
|                          
|INCOME (LOSS) BEFORE TAX   |  |                  | (51    | ) |                    |  
|                          
|PROVISION FOR INCOME TAX   |  |                  | --     |   |                    |  
|                          
|NET INCOME (LOSS)          |  | $                | (51    | ) |                    | $
|                          
|BASIC AND DILUTED SHARE    |  |                  |        |   |                    |  
|DATA:                      |  |                  |        |   |                    |  
|                          
|NET INCOME (LOSS)          |  | $                | ( 0.01 | ) |                    | $
|                          
|WEIGHTED AVERAGE SHARES    |  |                  |        |   |                    |  
|OUTSTANDING:               |  |                  |        |   |                    |  
|                           |  |                  |        |   |                    |  
|Basic                      |  |                  | 4,587  |   |                    |  
|                          
|Diluted                    |  |                  | 4,587  |   |                    |  
|                          
|                           |  |                  |        |   |                    |  



The accompanying notes are an integral part of these condensed consolidated financial statements.

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PART II. OTHER INFORMATION

Item 6. Exhibits

> Exhibit 31.1 Rule 13a-14(a) Certification by Chief Financial OfficerExhibit 31.2 Rule 13a-14(a) Certification by Chief Executive OfficerExhibit 32.1 Section 1350 Certification

SIGNATURES

In accordance with the requirements of the Exchange Act, the Registrant caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

CELLULAR TECHNICAL
          SERVICES COMPANY, INC.By:
      /s/Kenneth BlockKenneth BlockSecretary and Chief Financial
          OfficerAugust 24,2007


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