AT&T does not currently allow tethering on the iPhone even though Apple's iPhone OS 3.0 includes the feature. The company is still deciding what a tethering data plan for iPhone would cost and how it would be structured.

Tired of waiting? If you have an iPhone 3G or 3GS running OS 3.0 and a computer running iTunes 8.2 on Mac OS X here's how to activate tethering. You will be able to connect your computer to the AT&T data network using USB or Bluetooth via your iPhone.

This September, PhoneSuit plans to release its MiLi Pro portable video projector for the iPhone and iPod Touch. The entire device folds up and has its own speakers and swappable battery.

The iPhone or iPod Touch docks directly into the accessory. There's also a VGA or RCA input on the side of the miniature projector, allowing it to be used with a computer or DVD player, etc.

iPhone blogger George Hotz has discovered a new layer of security in the recently released iPhone 3GS. If you're waiting on iPhone Dev-Team to release a jailbreaking and/or unlocking solution for your iPhone 3GS, generating a unique certificate for your device could keep your options open.

Apple will likely release iPhone OS 3.0.1 soon, possibly postponing a jailbreak even longer. George Hotz explains the process of generating a certificate below.

Sony may have brought us the Walkman, but Apple has been dominating portable music players in recent years with the iPod. With the release of the iPhone and iPod Touch, Apple is pushing further into Sony's territory with mobile gaming. Apple's AppStore has even started to attract major game developers.

The PlayStation Portable (PSP) has sold over 50 million units in the last four years, but Apple is quickly catching up, with 40 million video-game-capable units sold in only two years. According to the Nikkei Business Daily, Sony intends to compete directly with Apple's iPhone with its own mobile phone.

Complaints about the iPhone battery are not new to Apple. Owners of older iPhones often try to conserve limited battery power, especially since the iPhone is a power-hungry device. Unlike some other smartphones, spare batteries cannot be toted around since the battery is fully enclosed.

These issues pale in comparison to the latest complaints from some owners of the new iPhone 3GS. Apparently the batteries in some devices have become too hot to touch. In some cases, the white plastic back is being discolored by the excessive heat.