iPhone 3GS

Thanks to pod2g and the iPhone Dev-Team it's now possible to jailbreak the iPhone 4 and all models of the Phone 3GS untethered. Although iPhone 4S and iPad 2 owners are still waiting for an A5 jailbreak, all iOS devices running iOS 5.0.1 with A4 hardware can now be jailbroken untethered. This includes the original iPad, iPod touch 3G and iPod touch 4G.

Using redsn0w to jailbreak is a straightforward process, and will install the Cydia app store on your device. This opens up a whole new world of tweaks and apps to improve your iPhone experience and customize operation. Be sure that before you proceed with the instructions, you have installed the iOS 5.0.1 firmware update.

Battery cases make great accessories for the iPhone and iPod touch. Not only do they protect the mobile device, but they increase the battery life, often doubling battery power and keeping the iPhone charged. There are always sporadic reports of lithium-ion batteries malfunctioning, which can involve excessive heat, fire or even explosions.

Lately two brands of iPhone battery cases have been recalled as problems with internal parts have been discovered. To avoid risks of overheating and possible fire, use of these cases should be discontinued immediately. The first recall involves the Rocketfish RF-KL12, designed for the iPhone 3G and iPhone 3GS.

Apple has made it clear that Siri will not be available on any other iOS devices besides the iPhone 4S. iFixit believes this has to due with the device's unique proximity sensor. The iFixit team discovered whenever the screen of the iPhone 4S is activated the proximity sensor turns on.

The proximity sensor in other iPhone models is basically an infrared LED light that lets the device know when a user's face is near the screen. This allows the iPhone to switch off its touch interface when someone is making a call. iFixit believes the sensor inside the iPhone 4S switches on constantly so users can easily access Siri.

Apple is currently working on iOS 5.0.1 beta 2 to solve the iPhone 4S battery issues. As of now the new firmware is only available to registered developers, but iPhone Dev Team member, MuscleNerd, let us know that it still works with the current redsn0w jailbreak.

MuscleNerd tweeted: "The latest redsn0w will JB today's 5.0 1b2, but point it at either 5.0 or 5.01 IPSW for now. (Apple's being ruthless with betas!)"

The Dev Team recently released a tethered version of redsn0w for iOS 5. However, there is a simple solution to "semi-tether" your jailbroken device. The SemiTether package ensures you will not be stuck with an iPhone paperweight during a crash or unexpected reboot. You can read more about tethered vs. untethered iPhone jailbreaking here.

It looks a lot like the iPhone 4, but Tim Cook promised the latest Apple iPhone is "all new inside." The Apple CEO unveiled the iPhone 4S (not the iPhone 5) in Cupertino on Tuesday. The new iPhone features a dual-core A5 processor, 8-megapixel camera, and GSM and CDMA radios.

The iPhone 4S offers 8-hours of talk time (3G), and six hours of web browsing time (3G). It also features image stabilization, facial recognition, 1080p video recording capabilities and the new Siri voice control feature.

The iPhone 4S will be available in the US from AT&T, Verizon and Sprint on October 14th. Pre-orders begin this Friday, October 7th. The 16GB model will cost you $199, the 32GB version is $299 and 64GB version will retail for $399.