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. Apple released iOS 4.3.4 to address the exploited vulnerabilities 10 days after Saffron's public debut.

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. On May 25, 2012, all models except for the iPad 2 Wi-Fi (R2) model are jailbreakable on iOS 5.1.1 with Absinthe 2.0, based on Rocky Racoon and the original Absinthe's exploits. Absinthe 2.0.4 was released which is the latest version and supports the iPad 2 Wi-Fi (R2).