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. The iPhone 4 introduced Apple's new high-resolution "Retina Display" (with a pixel density of 326 pixels per inch), while maintaining the same physical size and aspect ratio as its precursors, Apple's A4 system-on-chip, along with iOS 4—which notably introduced multitasking functionality and Apple's new FaceTime video chat service. It was the first iPhone at the time to include a front-facing camera, and the first to be released in a version for CDMA networks, ending AT&T's period as the exclusive carrier of iPhone products in the United States.
The iPhone 4 received a largely positive reception, with critics praising its revamped design and more powerful hardware, in comparison to previous models. While it was a market success (with over 600,000 pre-orders within 24 hours), the release of the iPhone 4 was plagued by highly publicized reports concerning abnormalities in its new antenna design that caused the device to lose its cellular signal if held in a certain way. Most direct contact with the phone's outer edge would cause a significant decrease in signal strength. Apple released iOS 4.0.1 to try to fix these issues, but were unsuccessful.The iPhone 4 spent the longest time as Apple's flagship iPhone model at fifteen months. Although the succeeding 4S was announced in October 2011, the 4 continued to be sold as a midrange model until September 2012, and thereafter as the entry-level offering in Apple's lineup until September 2013 with the announcement of the iPhone 5S/iPhone 5C. The iPhone 4 had one of the longest lifespans of any iPhone ever produced, spanning close to four years and available in some developing countries until early 2015.

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  1. V

    Closed How to openline iphone 4 from US

    May iphone 4 ako tas gusto kong eh openline. Sayang eh hehehe. Please help me
  2. C

    Closed How to openline iphone 4s?

    Pa help namn mga idol kung pano magpa openline nang Iphone 4s..please help me pleaase ..thanks sa makatulong..
  3. J

    Closed Patulong please

    hi po ! sino po kaya marunong mag jailbreak ng iphone 4 ?? salamat po.
  4. N

    Closed Any shadowsocks app for ios 7 ?

    Meron bang shadowsocks app para sa ios 7 ? pa link naman
  5. C

    Closed Iphone 4 recovery mode issue

    Laging recovery mode error -1 ang ip4 ko sa itunes. Di naguupdate or nagrerestore ang phone ko. Please help me. Anong best way na gawin ko?
  6. K

    Closed Stuckituneslogo

    iphone4s to ios9 pagkatapos ko iupdate nagrestart tas nagstuck yung ituneslogo tas diko ko alam idfu mode at ginawa ko na rin yung home+power off button pero ganun parin stuck parin ituneslogo help naman po mga kaphcorner please
  7. K

    Closed Stuckituneslogo

    Guys pahelp naman naistuck yung itunes logo nung n ash update ako ng ios please help on how to resolve please asap iphone.4 po to ios9
  8. D

    Closed Iphone4 activation

    Ayan po yung sa pic IMEI: 012844000297785 Gusto ko kasi siya magamit pang text at call
  9. M

    Closed HELP

    Patulong naman po factory unlock iphone4 ko . thanks po. sino po may kakilala .. yung mura lang sana. salamat :)
  10. P

    Closed How to fix iphone4 stuck on charging/blinking apple logo can't turning on

    Sa mga experts dyan ng iphone. ano kaya dahilan bakit ayaw nang mag charge ng iphone ko. stuck lang sya sa charging logo at ayaw mag turn on pag naplug kona ang charger nya.? Any suggestions lang po. kung ano gagawin thanks!
  11. T

    Closed Help panu mgopenline ng ip4?

    Help po
  12. P

    Closed {HELP} Any solution for iphone 4 ios 7.0.4 "No Service"

    I bought an iPhone 4 originally locked to globe. But it was locked by Find My iPhone Activation Lock. I was able to häçktivate it and im currently using it as an iTouch. The Problem is, i dont get signal or any network coverage. Is there anyone, experienced this? Anyone has a solution...