iPhone 4 Specs and Definition

apple iphone 4
The iPhone 4. image copyright Apple Inc.

Release date: June 24, 2010
Discontinued: Sept. 2013 (in most of the world; it continued to be available developing markets like India in part of 2014)

Thanks to a loss of a pre-release version of the iPhone 4, and Apple's subsequent confirmation that the lost device was authentic, this model of the iPhone was revealed to the public before Apple officially announced it making its release somewhat anticlimactic.


That said, the iPhone 4 was a major step forward over its predecessors in a number of areas. First, the iPhone 4 was visibly different from earlier versions thanks to its more-square shape (gone were the iPhone 3GS' tapered sides), a microSIM slot on its side, and circular volume buttons on the left. When using the 4 it was also immediately clear that something had changed: the screen was much higher resolution; it was the first iPhone to use the Retina Display screen technology.

iPhone 4 Features

In addition to the standard features of an iPhone (cellular data connection and Wi-Fi, multitouch screen, App Store support, GPS, Bluetooth, etc.), the iPhone 4 sported:

  • Apple A4 processor (the same chip used in the original iPad)
  • a 3.5-inch, 960 x 640 display, with greater pixel density in the screen (326 pixels/inch), leading to higher-quality images, via Retina Display
  • 2 cameras - front- and back-facing, with LED camera flash for back camera
    • 5 megapixel camera on the back
    • VGA quality images from user-facing camera
  • 720p (high-def) video recording at 30 frames/second, with LED flash; the new iMovie app for iPhone provides on-camera video editing
  • FaceTime video calls (only worked on Wi-Fi and for iPhone 4-to-iPhone 4 calls when introduced; that subsequently changed as more models and OS updates were released). The iPhone 4 was the first Apple device to support FaceTime
  • 512MB of RAM
  • Gyroscope (combined with accelerometer to offer 6-axes for better gaming) added to the standard set of iPhone sensors
  • Existing apps took advantage of new screen resolution, but will look best with tweaking by developers
  • 24% thinner than iPhone 3GS
  • new body design featured glass front and back and steel sides. The seam near the bottom of the phone accommodated a larger antenna, which Apple said would result in fewer dropped calls.

Thanks to its introduction of now-standard iPhone features—such as FaceTime, Retina Display, two cameras, and on-board video editing— the iPhone 4 can be seen as the first modern iPhone, the precursor to the iPhone 5S and 5C, and the first iPhone to break with the lineage of the original model.

Antennagate Controversy
The iPhone 4 was the first iPhone to have its cellular antenna exposed on the outside of the phone's body (the small lines at the top and bottom edges of the phone are the antenna). While this was originally hailed as a design breakthrough, users soon began reporting that holding the iPhone by the bottom would cause a drop in cellular signal strength and sometimes even dropped calls.

Apple's initial reluctance to acknowledge this issue (though, in fact, it's an issue common to many smartphones, not just iPhones) led to the affair being dubbed "Antennagate." Read all about Antennagate and how to solve the related issues here.


iOS Version Support
Came pre-loaded with iOS 4
Support for:

iPhone 4 Capacity

iPhone 4 Battery Life
Apple claimed: 

  • Voice
  • Internet
    • 10 hours of Wi-Fi
    • 6 hours on 3G
  • Entertainment
    • 10 hours of video
    • 40 hours of music
  • 300 hours standby


Size and Weight
4.51 inches tall by 2.31 inches wide by 0.37 inches deep
Weight: 4.8 ounces


Also Known As: 4th generation iPhone, 4G iPhone, fourth generation iPhone

Was this page helpful?