Walgreens has announced several updates to its mobile app, most notably the ability to print from Instagram, as well as upload more than five pictures simultaneously for in-store prints.

Walmart and Straight Talk Wireless, America's largest no-contract cell phone provider, announced that starting on Jan. 11, customers in more than 2,000 Walmart stores and online at Walmart.com will have access to the iPhone 5 and iPhone 4 on Straight Talk's $45 no contract unlimited talk, text and data plan.

Dollar General announces its new mobile applications for iPhone and Android smartphones that include sales ads, store locations, coupons and more.

Rouse Properties announced that three of its Bay Area shopping mall locations – NewPark Mall in Newark, Calif., Southland Mall in Hayward, Calif. And West Valley Mall in Tracy, Calif. – are launching a one-month pilot program to offer common area small business retailers a convenient and cost-effective point-of-sale solution.

As consumers await the debut of Apple’s iPhone 5, two retailer applications are now ranked among the Top 20 “bestsellers” free apps as ranked by Apple.

According to multiple reports, Walmart is testing a new iPhone app that will allow shoppers to scan items using their iPhones and complete their transactions at in-store self-checkout kiosks.

Dunkin Brands said it has launched its first-ever mobile app for payment and gifting purposes.

Mobile development platform-provider Moovweb said that Golfsmith has selected its SmartMoov mobile cloud technology to power the golf retailer’s next generation experiential mobile website and iPhone app.

Walgreens extended its innovation in mobile technology with the introduction of a developer portal that allows third-party software developers to integrate the Walgreens QuickPrints software development kit, enabling photo printing directly from iPhone and Android mobile devices.

A report by Bloomberg said that the Sprint-owned pay-as-you-go carrier Virgin Mobile will open 10 retail stores on Friday in Chicago, as part of its plan to leverage iPhone’s expansion into the prepaid wireless space.

Whole Foods is rewarding customers that live a green lifestyle through a new app it created with Whole Planet Foundation and BlueAvocado.