Apple Inc. faces a growing threat to its iPhone business, as renegade stores spring up online to sell unauthorized software for the device.
The developer behind some popular iPhone software on Friday plans to open a service called Cydia Store that could potentially sell hundreds of iPhone applications that are not available through Apple’s official store. Users must download special software that alters their iPhones before they can run these programs.
Another small company plans a store called Rock Your Phone for iPhone users who have not yet modified their devices to make it easier to download and buy unauthorized applications. A third start-up is building an online store that specializes in selling adult games for the iPhone.
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