FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   TA IX LP 2. Date of Event Requiring Statement (Month/Day/Year) 03/05/2007 3. Issuer Name and Ticker or Trading Symbol METROPCS COMMUNICATIONS INC [N/A] (Last) (First) (Middle) JOHN HANCOCK TOWER, 200 CLARENDON ST. 56TH FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) See General Remarks 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) BOSTON, MA 02116 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 4,739,021 D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Series D Convertible Preferred Stock	  (1)	  (1)	Common Stock	3,562,135 (1) (2)	$ 9.4 (1)	D	Â
Series E Convertible Preferred Stock	  (3)	  (3)	Common Stock	650,477 (3) (4)	$ 27 (3)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
TA IX LP JOHN HANCOCK TOWER 200 CLARENDON ST. 56TH FLOOR BOSTON, MA 02116	  X	Â	Â	See General Remarks

Signatures

TA IX L.P.		03/07/2007
**Signature of Reporting Person		Date
By: TA Associates IX LLC, its General Partner		03/07/2007
**Signature of Reporting Person		Date
By: TA Associates, Inc., its Manager		03/07/2007
**Signature of Reporting Person		Date
By: Thomas P. Alber, Chief Financial Officer		03/07/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The Series D Convertible Preferred Stock (the "Series D Preferred Stock") and the accrued but unpaid dividends thereon will automatically convert into common stock (the "Common Stock") of MetroPCS Communications, Inc. (the "Issuer") at the price of $9.40 per share of Common Stock upon (i) completion of a Qualified Public Offering (as defined in the Securities Purchase Agreement, as amended); (ii) the Common Stock trading on a national securities exchange for a period of 30 consecutive trading dates above a price that implies a market valuation of the Series D Preferred Stock in excess of twice the initial purchase price of the Series D Preferred Stock; or (iii) the date specified by the holders of two-thirds of the initial purchase price of the Series D Preferred Stock. If not previously converted, the Issuer is required to redeem all outstanding shares of Series D Preferred Stock on July 17, 2015, at the liquidation value plus accrued but unpaid dividends.
(2)	This amount includes 785,487 shares of Common Stock issuable pursuant to accrued dividends.
(3)	The Series E Convertible Preferred Stock (the "Series E Preferred Stock") and the accrued but unpaid dividends thereon will automatically convert into common stock (the "Common Stock") of MetroPCS Communications, Inc. (the "Issuer") at the price of $27.00 per share of Common Stock upon (i) completion of a Qualified Public Offering (as defined in the Second Amended and Restated Stockholders Agreement); (ii) the Common Stock trading on a national securities exchange for a period of 30 consecutive trading dates above a price that implies a market valuation of the Series E Preferred Stock in excess of twice the initial purchase price of the Series E Preferred Stock; or (iii) the date specified by the holders of two-thirds of the initial purchase price of the Series E Preferred Stock. If not previously converted, the Issuer is required to redeem all outstanding shares of Series E Preferred Stock on July 17, 2015, at the liquidation value plus accrued but unpaid dividends.
(4)	This amount includes 54,203 shares of Common Stock issuable pursuant to accrued dividends.
  Remarks: The Reporting Person is a member of a 13(d) group owning more than 10%.  The Reporting Person has a representative on the issuer's board of directors.  C. Kevin Landry currently serves as the Reporting Person's representative on the board of directors and, as such, the Reporting Person is deemed a director of the issuer.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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