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The Unofficial iPhone 4 FAQ

The iPhone 4 FAQ not written by Apple's marketing team, extra juice included.


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How many different dank iPhones has been released? » Improve Q
  1. iPhone: the original, released in 2007.
  2. iPhone 3G: first iPhone to support 3G cell network, released in 2008.
  3. iPhone 3GS: similar to the last iPhone but with faster speed, hence the extra S, released in 2009.
  4. iPhone 4: the 4th iteration of iPhone, released in 2010.
  5. iPhone 4S: released in 2011.
  6. iPhone 5: released in 2012.
  7. iPhone 5C: released in 2013
  8. iPhone 5S: released in 2013
  9. iPhone 6: released in 2014
  10. iPhone 6 Plus: released in 2014
  11. iPhone 6S: released in 2015
  12. iPhone 6S Plus: released in 2015
  13. iPhone SE: released in 2016
  14. iPhone 7: released in 2016
  15. iPhone 7 Plus: released in 2016
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What is the difference between iPhone 4 and iPhone 3GS? » Improve Q
Major Improvements, iPhone 4 has:
  • a second front facing camera, allowing it to make FaceTime video call.
  • high resolution "retina display" screen.
  • main camera comes with flash and sports 5 mega pixel, and is capable of recording 720p HD video.
Minor Improvments, iPhone 4:
  • uses A4 processor which is slightly faster
  • is slimmer.
  • has a gyroscope able to detect more movements of the phone more accurately
  • uses Micro SIM, a smaller version of SIM card.
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What is "Retina Display"? » Improve Q

"Retina Display" is a marketing term coined by Apple to describe the high resolution screen first debuted on iPhone 4, whose 3.5 inch screen was packed with 960x640 pixels, resulting in 326 pixels per inch (ppi) density. Their theory was that at that density pixels become so small that human eyes cannot spot the individual pixels even at very close distance. Although there has been report countering the theory, pixel density on iPhone 4's screen was in fact far denser than any competitors' on the market at the time of announcement. Many screen has since achieve similar density since iPhone 4 debuted in 2010.

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What is "FaceTime"? » Improve Q

"FaceTime" is Apple's version of video call. Currently FaceTime is only available in areas with Wi-Fi internet connection and only between iOS devices (iPhone, iPod, iPad and Macs) equipped with front facing cameras.

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Why can't I call iPhone 4 the iPhone 4G? » Improve Q
iPhone 4 actually only supports 3G cell network, thus people go crazy when you add an extra G and call it iPhone 4G. » Improve A
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What is the deal with the antenna? » Improve Q

Due to the new design where the outer rim of iPhone 4 also act as antenna, reception would degrade when holding iPhone 4 in a way that would cover the bottom left corner. Apple has since announced it would give out free bumper case because of it. However the effect of degradation varies from phone to phone and from area to area. The issue is commonly referred to as "antennagate".

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What is the difference between locked and unlocked iPhones? » Improve Q
A locked iPhone means you can only use SIM card from the carrier the phone is locked to. For example a locked iPhone purchased from AT&T would not work with SIM card from any other phone carriers. An unlocked iPhone has no such restriction. » Improve A
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Is my iPhone unlocked? » Improve Q
in US, your iPhone 4 will be locked to AT&T.
In Canada, if you buy your iPhone 4 through a phone carrier, your phone would be locked to that carrier. If you buy your iPhone 4 from Apple Store, your phone would be unlocked.
(this is an incomplete list)
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What is the difference between factory unlocked and non-factory unlocked iPhones? » Improve Q

Factory unlocked means the iPhone is legitimately unlocked in the Apple data base. Non-factory unlocked means iPhone is unlocked using hacking technique such as jailbreak or by use of simcard. Non-factory unlocks are less stable, may void warranty and will be lost or not work after upgrading the ios firmware.

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What is jailbreaking? » Improve Q
Jailbreaking allows users to install apps, themes, extensions and any software on iPhone, including those not approved by Apple. » Improve A
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