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Wednesday, January 12, 2011

The Apple iPhone 4

The Apple iPhone 4 is 24 percent thinner than its predecessor at 9.3mm thick, contain a front-facing camera, and offer greatly improved battery performance (up to 40 percent more talk time).
The iPhone 4 will be priced at $199 for a 16GB model and $299 for a 32GB model.
New operating system for both iPhones and the iPad: Called iOS4, it will have 100 new features and 1500 application programming interfaces or APIs.
Other iPhone 4 Features

Apple iPhone 4's gyroscope and other featuresThe new phone will have 32 gigabytes of storage, a gyroscope (which will allow for more precise motion detection), and HD video recording capability.

The phone also will have a improved screen resolution: 326 pixels per inch with heightened contrast. 300 pixels per inch is the limit of the ability of the human retina to view images.

It also will have three antennae built into the structure of the phone's body that will provide the iPhone 4 with the ability to work with Bluetooth; WI-Fi and GPS; and UMTS and GSM.

There are new volume buttons, a mute button, plus a second microphone on the top for noise cancellation. Just like the iPad, it now incorporates a micro-SIM tray.
Camera and Screen Details

iPhone 4 camera featuresThe IPhone 4 comes with two cameras: One on the front for video conferencing, and one on the rear for photos and video. The rear-facing camera has been upgraded to 5 megapixels--up from 3 megapixels on the iPhone 3GS--and it can record 720p high-definition video.

Also included is an iPhone version of iMovie, which will let you edit video clips on the phone, splice them together, add titles to your videos, and so forth.

The iPhone 4 screen will have In-plane switching. Known as IPS, this is a high-end LCD technology that has better color and a better viewing angle than lower-end LCD screens. Apple currently uses an IPS screenin its iPad.

The new phone's 800:1 contrast ratio was four times better than the current iPhone 3GS, with better color and a wide viewing angle that Jobs claimed was better than you can get with OLED display technology.

FaceTime, a video chat app that makes use of the iPhone 4's new front-facing camera. FaceTime works over Wi-FI, and works between any two iPhone 4s. Jobs did note that FaceTime will not yet work if you're connected to a cellular data network--apparently there are a few kinks left to work out.

As an e-reading platform, iBook has been greatly enhanced with the addition of a separate PDF library, and the ability to sync between iPad and iPhone.

These additions, coupled with the high-resolution display, make the iPhone more viable as an e-reader (its relatively small screen notwithstanding). And, overall, it makes Apple a bigger threat to in the e-reader space, period.

With an LCD screen that, theoretically (and from what we saw in the demo at the keynote today) can better approximate the text on a printed page, an E-Ink screen's usefulness may become redundant. This could be bad news for the Amazon Kindle e-book reader and others like it.

E-ink may continue to hold an advantage in its easy-on-the-eyes, paper-like background, but that will be one of its only advantages.

iPhone 4 Reception Issues

the iphone have 1 of the biggest defect of reception low while hold it in hand
below video will give demo

i phone 4 overall features  
2G Network 
GSM 850 / 900 / 1800 / 1900
3G Network 
HSDPA 850 / 900 / 1900 / 2100
Announced 2010, June

SIZE Dimensions 115.2 x 58.6 x 9.3 mm
Weight 137 g

LED-backlit IPS TFT, capacitive touchscreen, 16M colors
Size 640 x 960 pixels, 3.5 inches
- Scratch-resistant oleophobic surface
- Multi-touch input method
- Accelerometer sensor for auto-rotate
- Three-axis gyro sensor
- Proximity sensor for auto turn-off

Alert types Vibration, MP3 ringtones
Speakerphone Yes
- 3.5 mm headset jack

Phonebook Practically unlimited entries and fields, Photocall
Call records 100 received, dialed and missed calls
Internal 16/32 GB storage, 512 MB RAM
Card slot No

GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps
EDGE Class 10, 236.8 kbps
3G HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps
WLAN Wi-Fi 802.11 b/g/n
Bluetooth Yes, v2.1 with A2DP
Infrared port No
USB Yes, v2.0

Primary 5 MP, 2592 x 1944 pixels, autofocus, LED flash,
Features Touch focus, geo-tagging
Video Yes, 720p@30fps, LED video light, geo-tagging
Secondary Yes, videocalling over Wi-Fi only

OS iOS 4
CPU 1 GHz Apple A4 processor
Messaging SMS (threaded view), MMS, Email, Push Email
Browser HTML (Safari)
Games Downloadable, incl. motion-based
Colors Black, White
GPS  A-GPS support
Java No
- MicroSIM card support only
- Scratch-resistant glass back panel
- Active noise cancellation with dedicated mic
- Digital compass
- Google Maps
- Audio/video player and editor
- Voice command/dial
- TV-out

Standard battery, Li-Po 1420mAh
Stand-by Up to 300 h (2G) / Up to 300 h (3G)
Talk time Up to 14 h (2G) / Up to 7 h (3G)
Music play Up to 40 h

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