Steve Jobs’ plan for iPhone world domination marched forward Friday.

Apple on Friday plans to debut its iPhone 3G across 21 new countries in a move that will give it access to 290 million new wireless subscribers, Piper Jaffray analyst Gene Munster wrote in a note to clients.

“We believe the 78 percent increase is not factored into Street estimates,” he wrote.

Shares of the Cupertino, California, Mac maker climbed $2.75, or 1.58 percent, to $177.04 in midday trading.

Apple’s iPhone until now was available across 22 countries to a potential 370 million subscribers.

The popular phone will hit Argentina, Chile, Columbia, the Czech Republic, Ecuador, El Salvador, Estonia, Guatemala, Honduras, Hungary, India, Latvia, Lithuania, Paraguay, Peru, the Philippines, Poland, Romania, Singapore, Slovakia, and Uruguay.

Piper Jaffray makes a market in Apple securities and has a $250 price target on the stock.