OREANDA-NEWS. October 28, 2009. Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that its consolidated subscriber base reached 96.86 million users on September 30, 2009.

During September, MTS’ consolidated subscriber base increased by 0.69 million subscribers with over 440 thousand subscribers added in Russia.

Subscribers (mln)

Sep 30, 2009

Aug 31, 2009

Growth
Subs

Growth
%

Sep 30, 2008

Growth
Subs

Growth
%

Total consolidated subscribers, end of period

96.86

96.17

0.69

0.7%

87.57

9.29

10.6%

Russia

68.70

68.26

0.44

0.7%

61.88

6.82

11.0%

  Moscow and the
  Moscow region

14.08

14.34

(0.26)

(1.8%)

14.31

(0.23)

(1.6%)

  St. Petersburg and the   Leningrad region

3.68

3.73

(0.05)

(1.2%)

3.10

0.58

18.9%

  Rest of Russia

50.94

50.19

0.75

1.5%

44.47

6.47

14.5%

Ukraine

17.78

17.77

0.01

0.5%

18.09

(0.31)

(1.7%)

Uzbekistan

6.79

6.67

0.12

1.8%

5.06

1.73

34.2%

Turkmenistan

1.50

1.41

0.09

6.5%

0.76

0.74

97.2%

Armenia

2.08

2.05

0.03

1.2%

1.78

0.30

16.6%

MTS Belarus1

4.52

4.50

0.02

0.5%

4.16

0.36

8.6%

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