Google upgraded product search for mobile, on Android and iPhone devices. It now allows users to get price comparison and product reviews information via Google Shopping search on Android and iPhones. Here's the official Google blog post together with explanatory video.

As I said in my post at Search Engine Land:

Many people are using their handsets in stores to check price and product reviews to validate that the item they're standing in front of is worthy and/or not substantially cheaper online. There are a growing number of mobile shopping apps and sites contemplating this use case. Among Android apps, the best known is ShopSavvy, which features a bar code scanner that takes advantage of the phone's camera to deliver price, reviews and local inventory data. Yahoo Mobile also offers price and product information similar to what Google is doing. Recognizing the growing importance of mobile product search and price comparisons, every shopping engine and product reviews site will soon offer a mobile-optimized version of itself and/or an app.

Image credit: Google