The iPhone 4 is the fourth generation Internet and multimedia-enabled smartphone from Apple. Steve Jobs introduced the iPhone 4 during the Apple Worldwide Developers Conference Keynote Address 2010. As of February 2011, the iPhone will have a new carrier. Verizon and Apple has teamed together to offer the iPhone through Verizon's stores and website.http://technolog.msnbc.msn.com/_news/2011/01/12/5823183-rabid-iphone-fans-slam-verizon-website The service plans have not been announced and the phone will operate on Verizon's 3G network.http://www.pcmag.com/article2/0,2817,2375584,00.asp The prices will be comparable to At&T's and will require a service contract.http://technolog.msnbc.msn.com/_news/2011/01/12/5823183-rabid-iphone-fans-slam-verizon-website Reports have been that customers have swamped the Verizon website since the announcement.http://technolog.msnbc.msn.com/_news/2011/01/12/5823183-rabid-iphone-fans-slam-verizon-website

The new smartphone is available in black or white and in two models. The 16GB model sells for $199 and the 32GB model sells for $299 with a two year AT&T contract in the US.http://www.wireless.att.com/cell-phone-service/packages/iphone-packages.jsp The iPhone 3GS will continue to be sold with iOS 4 but only 8GB for $99 via AT&T - not quite a free cell phone.http://www.wireless.att.com/cell-phone-service/packages/iphone-packages.jsp Many still refer to the iPhone 4 as the iPhone 4G.

The iPhone has been reported to have a signal loss defect caused by the design of the antenna. Consumer reports has indicated that when a finger is placed over a small gap on the lower left side of the phone a large drop in reception occurs.http://blogs.consumerreports.org/electronics/2010/07/apple-iphone-4-antenna-issue-iphone4-problems-dropped-calls-lab-test-confirmed-problem-issues-signal-strength-att-network-gsm.html They recommended that a temporary fix is to place a small strip of duct tape over the gap which will lessen the degree of signal loss. .http://blogs.consumerreports.org/electronics/2010/07/apple-iphone-4-antenna-issue-iphone4-problems-dropped-calls-lab-test-confirmed-problem-issues-signal-strength-att-network-gsm.html Apple is also providing free cases to owners that will also help improve the problem.http://www.macobserver.com/tmo/article/early_free_apple_bumper_case_orders_shipping/

Apple has announced that the white iPhone 4 will be delayed again. Quality control issues have added another delay in the ongoing saga of the white iPhone 4.http://www.eweek.com/c/a/Mobile-and-Wireless/White-iPhone-4-Delay-Echoes-Past-Apple-Issues-570538/

"Overall, the iPhone 4 outclasses pretty much every smartphone on the market in terms of industrial design. It just comes off like a far more expensive device, like a Mobiado or Vertu -- but better designed."—Joshua Topolsky with engadget.com.http://www.engadget.com/2010/06/22/iphone-4-review/

"With the iPhone 4, Apple again shows that it is a powerful player in the smartphone wars. It won't be for everyone, the call quality and reception vary if you don't use a case, and AT&T's network remains a sticking point, but the handset's striking design, loaded feature set, and generally agreeable performance make it the best iPhone yet."'—Kent German for cnet Reviews.http://reviews.cnet.com/iphone-4-review

"As far as system performance, the iPhone 4 is very snappy. Apps load almost instantly. I have no complaints at all as far as that is concerned. I also have no real complaints about battery life."—Julie for The Gadgeteer http://the-gadgeteer.com/2010/08/09/apple-iphone-4-review/

Basic Specs

• 9.3 mm (24% thinner than 3GS)http://www.appleinsider.com/articles/10/06/07/apple_unveils_redesigned_thinner_iphone_4_with_two_cameras.html
• Front camerahttp://www.apple.com/iphone/specs.html
• Stainless steel
• Optical quality glass -scratch resistant - recommend a case or Apple Bumpers
• integrated antennas (Bluetooth, WiFi, GPS, UMTS, GSM)

New Retina Display

• Increases pixel density 4X to 326 ppi and the human limit is 300 ppi at 10-12 inches.http://www.bitetheapple.tk/how-to-adjust-spotlight-search-on-iphone-4/
• Display 3.5 inch - 960 X 640 Retina Display has 78% of pixels of an iPad so iPhone OS 4 iOS 4 runs full size but better rendering.http://www.bitetheapple.tk/how-to-adjust-spotlight-search-on-iphone-4/

A4 chip

• 40% more talk time (7 hours)http://www.appleinsider.com/articles/10/06/07/apple_unveils_redesigned_thinner_iphone_4_with_two_cameras.html
• 6 hours 3G browsing, 10 hours WiFi browsinghttp://www.appleinsider.com/articles/10/06/07/apple_unveils_redesigned_thinner_iphone_4_with_two_cameras.html
• 10 hours videohttp://www.appleinsider.com/articles/10/06/07/apple_unveils_redesigned_thinner_iphone_4_with_two_cameras.html
• 40 hours musichttp://www.appleinsider.com/articles/10/06/07/apple_unveils_redesigned_thinner_iphone_4_with_two_cameras.html
• 300 hours standbyhttp://www.appleinsider.com/articles/10/06/07/apple_unveils_redesigned_thinner_iphone_4_with_two_cameras.html

Gyroscope

• Provides enhanced gaming controls
• 3 axis gyro for pitch, roll, and yawhttp://www.patentlyapple.com/patently-apple/2010/06/patents-come-to-life-for-video-calling-3-axis-gyroscope-video-cam.html
• Combined with accelerometer 6 axis of motion sensinghttp://www.industrygamers.com/news/iphone-4-offers-6-axis-motion-gaming/
• CoreMotion API allows extremely precise locationhttp://iphone-or-android.com/iphone-features/how-to-take-a-screen-shot-with-iphone-4/

Camera system

• 5 megapixel camera, backside illuminated sensorhttp://www.apple.com/iphone/specs.html
• 1.75 micron pixel size in sensor, 5X digital zoom camera app and tap to focus with LED flash.,ref>http://www.bitetheapple.tk/how-to-adjust-spotlight-search-on-iphone-4/</ref>
• Records HD video - 720p at 30fps - tap to focus video with built-in video editing - one click sharing - LED flash can stay on while shooting video.http://www.apple.com/iphone/specs.html
• Record, edit, share HD video from your phone with iMovie for iPhone.http://www.apple.com/iphone/specs.html

Over 100 new features in iOS 4

• Multi-tasking, folders, retina display integration, mail (unified inbox and threading), enhanced camera and photo apps, deeper enterprise support.

New iBooks iPhone App

• Sync purchased iBookstore books to all your devices for no extra charge<ref>http://www.apple.com/iphone/specs.html</ref>

FaceTime

• Video calling - iPhone 4 to iPhone 4http://www.apple.com/iphone/
• Avaliable anywhere there is WiFi

Other Features

• 32GB storagehttp://www.apple.com/iphone/
• Quadband HSDPA/HSUPAhttp://www.nziphone.com/news/apple/apple-presents-iphone-4.html
• 7.2 mbit down, 5.8 mbit up (if carriers support)http://www.appleinsider.com/articles/10/06/25/iphone_4_hsupa_support_speeds_3g_uploads_by_10x.html
• Dual microphoneshttp://www.apple.com/iphone/design/
• 802.11nhttp://www.tuaw.com/2010/06/14/iphone-4-has-802-11n-but-not-the-awesome-802-11n/