when was this device first released to the public?
On June 7, 2010.
IPhone 4
The iPhone 4 is a smartphone that was designed and marketed by Apple Inc. It is the fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the 4S. Following a number of notable leaks, the iPhone 4 was first unveiled on June 7, 2010, 
how big is the screen on the iphone 6s iPhone 6 display is 4.7 inches in size. what are some of its battery features? The iPhone 6 features a 6.91 Wh (1810 mAh) battery, iPhone 6 Plus features an 11.1 Wh (2915 mAh) battery, neither of which are user-replaceable. in what colors are these phones available? In gold, silver, and space gray. what are some of the metals used to make these phones? Glass around the edges of the display, aluminum and plastic strips. what is the quality of the video or photo shot from this device? It has the quality of 1080p Full HD video and 720p HD slow-motion video. what are some of the software featured in this device? iOS 8. what are the applications found in this mentioned operating system? The new Health app, iCloud Photo Library in the Photos app, the cloud and iCloud Drive, Music app Apple Music, radio station called Apple Music 1. were there any crashes or bugs reported in this operating system? A study by Apteligent found that the rate at which apps crashed in their tests was 3.56% on iOS 8. what can you tell about the family sharing feature in this? 6 people to register unique iTunes accounts with one parent becoming the administrator, controlling the overall experience. It extends into apps like shared album, shared place. The purchase of items in the App Store, iTunes Store with the administrator having the option to either approve or deny the purchase. what are some of the versions of this mentioned operating system? iOS 8.0.1 and iOS 8.0.2 . name some devices in which this operating system can be installed. iPhone 4. what are some of the drawbacks of this mentioned device? Yellow discoloration of the screen, during calls the proximity sensor can be insensitive, photos taken on the iPhone 4 sometimes contained blue or green splotches when taken in low-light condition.
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IPhone 4 [SEP] Introduction
The iPhone 4 is a smartphone that was designed and marketed by Apple Inc. It is the fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the 4S. Following a number of notable leaks, the iPhone 4 was first unveiled on June 7, 2010, at Apple's Worldwide Developers Conference in San Francisco, and was released on June 24, 2010, in the United States, United Kingdom, France, Germany, and Japan. The iPhone 4 introduced a new hardware design to the iPhone family, which Apple's CEO Steve Jobs touted as the thinnest smartphone in the world at the time; it consisted of a stainless steel frame which doubled as an antenna, with internal components situated between two panels of aluminosilicate glass.