By James Paladino/ ( | First Posted: Dec 21, 2012 03:01 PM EST

Sprint store in New York City. (Photo : Reuters)

Starting today, Sprint is expanding its 4G LTE coverage across several regions in California, Pennsylvania, and Virginia, bringing the tally of markets served up to 49. The carrier asserts that 3G users will also experience a boost in voice quality, and network reliability in the following regions as well. This includes customers who use Virgin Mobile, Boost Mobile, and Assurance Wireless.

In an official statement, Senior Vice President of Network at Sprint Bob Azzi says, "We strive to deliver a top-notch network experience, and customers in these newly launched areas will see 4G LTE service get better and better in the weeks and months ahead to reach even more places where they live, work and play. Customers should find Sprint 4G LTE consistent, reliable and fast."

New 4G LTE California regions include: Santa Rosa/Petaluma and Vallejo/Fairfield.

Pennsylvania: York/Hanover and Franklin County.

Indiana: Indianapolis/Carmel.

Virginia: Page County, Shenandoah County (Improved LTE)

Other: Southern Puerto Rico/Ponce, Coamo, and Guyama.

Sprint subscribers who own any 4G LTE device, including the iPhone 5 and Samsung Galaxy S3, will now have access to the carrier's upgraded network effective immediately.

The iPhone 5 is feather-light and takes the record for the thinnest smartphone Apple has ever made. The device shows up the iPhone 4S with a 4-inch screen that displays at 1136 x 640 pixels, a brand new A6 chip, and an ultra-thin touch pad that sharpens feedback to user input.

The Galaxy S3 is powered by an Exynos 4 quad-core processor, 2GB RAM, and sports an 8-megapixel rear camera and a 1.9-megapixel front camera.

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