The Photon Q has a 4.3-in. touchscreen display with a slide-out five-row Qwerty keyboard. It runs on a 1.5GHz dual-core processor and Android 4.0.4. Sprint made it available for pre-order today online.

The Photon Q is the largest smartphone screen available on a 4G LTE network, which Sprint launched in 15 cities on July 15. The smartphone's other features include an 8-megapixel rear-facing camera and an HD front-facing camera. Because it runs Ice Cream Sandwich, it comes with Android Beam and uses Near Field Communication for sharing data.

The display offers ColorBoost technology for more vivid images. It is also scratch resistant and features a splash guard coating to protect it against spills.

Sprint continues to offer its smartphones with unlimited data plans, starting at $80 a month. Both of its larger competitors, AT&T and Verizon Wireless, charge for data in set allotments, which .

The carrier said it recognizes there is a large group of its customers who want a physical Qwerty keyboard. It has paired the device with international roaming capabilities for use abroad.