UPDATE 2-Nokia popularity fading among teens - survey

* Nokia top brand for 21 pct teens in '09 vs 29 pct in '08

* Sony Ericsson top brand for 18 pct vs 21 pct -survey

* Samsung, LG, Apple in next places -survey

(Adds analyst quotes, details)

By Tarmo Virki, European technology correspondent

HELSINKI, June 3 (Reuters) - Nokia's (NOK1V.HE) popularity among teenagers is fading, as the world's top handset maker has failed to introduce attractive mass-market models, according to a survey by networking site Habbo Hotel.

In the survey of 112,000 teenagers in 30 countries, 21 percent of respondents named Nokia as their favorite cellphone brand, down from 29 percent last year and dealing a blow to the ambition of Nokia to become the best-loved brand.

"I think the drop in the ranking reflects the fact that Nokia does not have really cool phones at the moment," said Gartner analyst Carolina Milanesi.

Tero Kuittinen, analyst with GC Research, attributed the drop in Nokia's popularity to the delay in coming out with touch screen phones, which allowed South Korea's Samsung Electronics Co Ltd (005930.KS) and LG Electronics Inc (066570.KS) to win share.

"Koreans are now rapidly moving downmarket and targeting the youth segment with cheap touch-screen phones like the LG Cookie. This is why it's crucial Nokia picks up speed and gets cheap touch devices out as soon as possible," Kuittinen said.

Nokia sold 2.6 million of its first touch-screen phone, the 5800 model, in the January-March quarter -- but has yet to introduce more touch-screen phones for the mass market.

"The 5800 was a great start for Nokia in addressing this global youth market, but it needs sibling models and spin-offs right now; the Koreans are churning out new touch devices on a monthly basis," Kuittinen said.

BRAND WARS

Nokia sells the most mobile handsets in the world, but Chief Executive Olli-Pekka Kallasvuo has repeatedly stated the company's ambition to win the global popularity contest as well, contending with such well-known brands as Coca-Cola.

In the latest annual Interbrand rankings, Nokia was the highest-rated non-U.S. brand but stood fifth globally, with its $35.9 billion value just behind General Electric.

"It is a sign that competition for the hearts and minds of young mobile users has intensified over the past year," said Neil Mawston from Strategy Analytics.