The iPhone 4 (CDMA/Verizon/Sprint) shares much with the original iPhone 4 but is distinguished by its support for CDMA (EV-DO Rev. A, 800 MHz, 1900 MHz) instead of GSM. Key differences include the absence of a SIM card slot, a redesigned antenna and button layout, and a new 3G "Personal Hotspot" feature that allows the phone to share its connection with up to five Wi-Fi-enabled devices.
Like the GSM version, the CDMA iPhone 4 features an all-stainless steel body, a 3.5-inch high-density 960x640 (326 ppi) IPS LED-backlit "retina" display, and integrated antennas in the surrounding metal band. The device has a chemically hardened "aluminosilicate" glass front and back, available in black or white (the black version was released on January 11, 2011, and the white on April 28, 2011). Both surfaces have an "oleophobic" oil-repellent coating.
It is equipped with dual cameras: a rear 5-megapixel camera for HD video/stills (720p at 30 FPS) with a "backside illuminated sensor," 5X digital zoom, and an LED flash, plus a front-facing VGA camera for FaceTime video calls over Wi-Fi. It also includes dual noise-canceling microphones.
Powered by an Apple A4 processor of unspecified speed, it has 512 MB of RAM and comes in 8 GB, 16 GB, or 32 GB storage options (the 8 GB model was introduced on October 4, 2011). Besides CDMA EV-DO Rev. A, it supports 802.11g/n Wi-Fi and Bluetooth 2.1+EDR.
The iPhone 4 models also include a digital compass, A-GPS, an accelerometer, and a 3-axis gyroscope for enhanced 3D gaming.
Apple states that the CDMA version provides up to 40 hours of audio, 7 hours of 3G talk time, 6 hours of 3G internet use, 10 hours of Wi-Fi internet use, 10 hours of video playback, and 300 hours of standby.
In the US, Verizon initially offered the 16 GB model for US$199.99 and the 32 GB for US$299.99, both with a two-year contract. On October 4, 2011, Apple introduced a low-end 8 GB version for US$99 with a two-year contract on either Verizon or Sprint. Finally, on September 12, 2012, Apple reduced the price of the 8 GB model to US$0 with a two-year contract or US$450 unlocked and contract-free. It was discontinued on September 10, 2013.