Google Inc. is learning that changing the cellphone industry isn't easy.

The Internet giant and more than 30 partners announced in November a bold plan for a new breed of handsets based on a suite of mobile software called Android. At the time, Google said it planned to have the new phones on the market by the second half of this year.

Google now says that the handsets won't arrive until the fourth quarter. And some cellular carriers and makers of programs that work with Android are struggling to meet that schedule, people familiar with the situation say.

Source:wsj.com