IPad 2



The iPad 2 was announced on March 2, 2011. It was initially released on March 11 in the United States, and March 25 elsewhere. There are three variants of the iPad 2:
 * Wi-Fi only (iPad2,1)
 * GSM model (iPad2,2)
 * CDMA model (iPad2,3)
 * Re-released Wi-Fi only model (iPad2,4)

Application processor
It makes use of the dual-core 1 GHz S5L8940 CPU (A5 chip).

The re-released Wi-Fi model (iPad2,4) uses a revised A5 chip known as the S5L8942.

Baseband (3G versions)
The GSM model uses the X-Gold 618 baseband chip, same as in the iPhone 4 GSM model.

The CDMA model uses Qualcomm's Gobi chipset, like the iPhone 4 CDMA model.

Wireless
The iPad 2 uses the BCM4329 for Bluetooth and Wi-Fi communication.

Specifications

 * Screen: 9.7" 1024x768 LED-backlit IPS display at 132 ppi
 * Size: 9.5 inches (241.2 mm) (height) x 7.31 inches (185.7 mm) (width) x 0.34 inch (8.8 mm) (depth)
 * Weight: 1.33 pounds (601 g) Wi-Fi model; 1.35 pounds (613 g) GSM model; 1.34 pounds (607 g) CDMA model
 * Battery: Up to 10 hours of Internet use, one month of standby
 * 3G: UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz) GSM model; CDMA EV-DO Rev. A (800, 1900 MHz) CDMA model
 * Rear camera: 0.7MP, supporting HD video recording @ 30 FPS
 * Front camera: VGA photos and video @ 30 FPS, supporting FaceTime video calls

Jailbreak
As of July 6, 2011, all variants of the iPad 2 running iOS 4.3.3 have been successfully jailbroken by comex, using JailbreakMe 3.0 Saffron which is a userland jailbreak. This was patched in iOS 4.3.4 as released by Apple 10 days after the release of Saffron.

As of January 20, 2012, all variants of the iPad 2 running iOS 5.0.1 have been successfully jailbroken, using Absinthe which is a userland jailbreak using a modified version of the Corona exploit used in other iOS 5 jailbreaks.