"Based in Mexico, América Móvil (NYSE: AMX) is the largest wireless service provider in Latin America," notes wireless sector expert Nikhil Hutheesing.

The editor of The Forbes Wireless Stock Watch notes that the company's largest stakeholder is billionaire Carlos Slim who holds a 30% stake. Here's the advisors's bullish assessment for the company.

"AMX, which was spun out of Mexico's Telmex in 2000, operates out of Mexico City, but only about 30% of its business is actually in Mexico. It has has been growing rapidly mostly by acquiring troubled Latin American operators that took on too much debt during the telecom bubble.

"Móvil then consolidates operations, changes management as necessary, and makes operations more efficient and profitable.

"With 3G networks in place, América Móvil will be able to boost revenue and profit by selling more data services. It's already offering 3G service in Mexico and plans to spend another $4 billion to upgrade its wireless networks to 3G in five or so more countries this year.

"While U.S. banks have struggled amid the credit and housing crises, Credicorp (NYSE: BAP) has excelled," notes John Reese, who assesses stocks based on the strategies of various well-known and time-tested gurus.

Here, the editor of the Validea newsletter looks at the Peru-based banking firm commerical banker and explains how it "passes the test" for four leading guru strategies: Peter Lynch, Martin Zweig, the Motley Fools, and William O'Neill.

"Credicorp's main subsidiary, Banco de Credito del Peru, actually grew its mortgage business 8.2% in the third quarter of 2007 (the most recent quarter for which data is available) as Peruvians' purchasing power continued to increase.

"My Peter Lynch-based strategy considers Credicorp a 'fast-grower' because of its 42.44% growth rate (based on the average of the three-, four-, and five-year earnings per share figures).

"Lynch famously used the P/E/Growth ratio to identify growth stocks selling on the cheap. By dividing Credicorp's 19.6 P/E ratio by that growth rate, we get a P/E/G of 0.46, which falls into my Lynch-based model's best-case category (below 0.5).

Validea is a fascinating newsletter that assesses stocks based on the known criteria of "legendary" stock investors, such as Warren Buffett and Peter Lynch.

Here, editor John Reese reviews Telefonica (NYSE: TEF) -- a Spain-based telecom firm with operates in Europe and Latin America -- based on the strategy of quantitative analyst James O'Shaughnessy.

"James O'Shaughnessy has noted that 'disciplined implementation of active strategies is the key to performance.' He should know; his study of 44 years of stock market data is one of the most extensive ever of the market.

"The system he devised based on that research produced average back-tested returns of 22% per year for those 44 years. At times like these, it's more important than ever to heed his advice, and keep your emotions in check by focusing on fundamentals.

"Telefonica (NYSE: TEF), based in Madrid, Telefonica is involved in the communications, information, and entertainment arenas in Europe, Africa, and Latin America. The firm has a presence in more than 20 countries and more than 218 million customers.