OREANDA-NEWS. December 28, 2009.  Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that its consolidated subscriber base reached 97.11 million users on November 30, 2009.

During October, MTS’ consolidated subscriber base increased by 0.3 million subscribers with over 210 thousand subscribers added in Russia.

Subscribers (mln)

Nov 30, 2009

Oct 31, 2009

Growth
Subs

Growth
%

Nov 30, 2008

Growth
Subs

Growth
%

Total consolidated subscribers, end of period

97.11

97.16

(0.05)

(0.1%)

89.68

7.43

8.3%

Russia

68.78

68.91

(0.13)

(0.2%)

63.27

5.51

8.7%

  Moscow and the
  Moscow region

13.57

13.81

(0.24)

(1.7%)

14.65

(1.08)

(7.3%)

  St. Petersburg and the   Leningrad region

3.69

3.67

0.02

0.5%

3.15

0.54

17.2%

  Rest of Russia

51.52

51.43

0.09

0.2%

45.48

6.04

13.3%

Ukraine

17.60

17.74

(0.14)

(0.7%)

18.10

(0.50)

(2.8%)

Uzbekistan

7.00

6.90

0.10

1.5%

5.49

1.51

27.6%

Turkmenistan

1.67

1.57

0.10

5.9%

0.87

0.80

92.5%

Armenia

2.05

2.04

0.01

0.4%

1.94

0.11

5.2%

MTS Belarus1

4.54

4.51

0.03

0.5%

4.23

0.31

7.1%

1 MTS owns a 49% stake in Mobile TeleSystems LLC, a mobile operator in Belarus, which is not consolidated.