AT&T will be moving up the release date of Samsung’s highly anticipated Galaxy S4 smartphone. The carrier opened preorders for the device last week with a ship date of April 30th. AT&T is now notifying customers to tell them that some preorders will arrive on April 25th. The company also revealed on its Twitter page that the smartphone will be available in stores two days later on April 27th, the same day as Sprint. Samsung’s flagship smartphone is equipped with a 5-inch Super AMOLED display with full HD resolution, a 1.9GHz quad-core Snapdragon 600 processor and a 13-megapixel rear camera. The handset also includes 2GB of RAM, up to 64GB of internal storage, NFC, a microSD slot and Android 4.2

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