Market demand on iPhone 3GS continues to increase and Apple has a problem about this. As many as 29 of 257 Apple stores are running out of one of iPhone version or even all of version is not available. Today there are only six states in the U.S. that serve registration for iPhone. For example, in Texas 12 of 15 stores run out of iPhone 16GB.

Apple has released the first iPhone model two years ago, and quickly became phenomenal. Second-generation, iPhone 3G has been released in the summer ago. Apple has sold more than 40 million units of iPhone and iPod Touch that has the same software.

iPhone 3GS start entering the market in mid-June in the U.S. and seven other countries and sold more than one million units in just the first three days. iPhone 3GS has claimed two times faster than iPhone 3G. iPhone 3GS also has features such as autofocus cameras, video recording and voice control.