Full-year results for Koryolink, North Korea’s only 3G cellular carrier, have been announced by Egypt’s Orascom Telecom. Orascom holds a 75 percent stake in Cheo Technology, which is the company that operates the Koryolink service. The remaining 25 percent stake is held by the government-run Korea Posts and Telecommunications Co. (KPTC).

The results show continued strong performance for the unit, which has been trying to expand use of the service by offering lower prices.

You can read the headline take in this story: North Korea’s Sole 3G Operator Sees Users and Revenue Surge, PC World.

The network expansion has continued and the company says: “Koryolink’s network currently has 333 on air base stations covering Pyongyang as well as 14 other main cities (mainly Wonsan, Hamhung, Pyongsong, Anju, Kaechon, Nampo, Sariwon  & Haeju) as well as 22 highways. The network supports a variety of services in addition to voice such as video call, SMS, MMS, voice mail, WAP and HSPA. As of the end of 2010, koryolink has managed to cover 91% of DPRK population.”

I’ve produced a few graphs that detail the current trends at Koryolink.

First, the total subscriber count, which is starting to look a little like an exponential curve.

In terms of penetration, the subscriber numbers mean 1.8 percent of the population of 24 million people have a cell phone. That obviously leaves a lot of people without one, but how many can afford a phone and subscription is an important question. Koryolink has already had to introduce a cheaper tariff to attract more users.

Here’s the quarterly subscription growth. The effects of the cheaper tariff in the second quarter can be seen.

And the quarterly revenue figures:

And the quarterly EBITDA:

Orascom Telecom’s full-year earnings report, which includes all this data, can be found in PDF form on its website.