MTS-Uzbekistan, subsidiary of Russia’s Mobile TeleSystems (MTS) in Uzbekistan, registered 252,800 new users in the first quarter of 2007 to 1.7 million, MTS said in its press release.

During the quarter mobile penetration in Uzbekistan increased from 9.4% to 11.5% and the market share of MTS in the country comprised 56%.

Revenues in Uzbekistan in the first quarter added US$49.1 million to the company’s consolidated revenues (up 93.2% y-o-y), US$31.3 million to its consolidated OIBDA (up 99.0% y-o-y) with an OIBDA margin of 63.7%, and US$16.8 million to its consolidated net income (up 175.4% y-o-y).

Operating income before depreciation and amortization (OIBDA) represents operating income before depreciation and amortization. OIBDA margin is defined as OIBDA as a percentage of net revenues.

First quarter ARPU was US$10.3, a decrease from US$12.0 in the previous quarter. First quarter MOU was 463 minutes, a decrease from 515 minutes in the previous quarter.

Average monthly service revenue per subscriber (ARPU) is calculated by dividing service revenues for a given period, including interconnect and guest roaming fees, by the average number of our subscribers during that period and dividing by the number of months in that period.

Average monthly minutes of usage per subscriber (MOU) is calculated by dividing the total number of minutes of usage during a given period by the average number of our subscribers during the period and dividing by the number of months in that period.

MTS’ expenditure on property, plant and equipment in the first quarter totaled US$2.7 million in Uzbekistan.