You may be aware that Microsoft's Zune HD will hit shelves on September 15th. The portable device will play HD video and compete with Apple's iPod Touch. What you may not know is that the iPhone 3GS is already capable of playing 720p and 1080p resolution HD video without skipping a beat.

Although the iPhone screen resolution is only 480x320 pixels, the possibility of future Apple devices linking to external displays for HD video playback is real.

With the MMS debacle ongoing, iPhone users are desperately looking for reasons to like AT&T. The company has started its 850MHz spectrum upgrade, which should improve signal strength in buildings and overall quality.

iPhone users in some urban areas are already reporting improved 3G reception and performance. AT&T has confirmed upgrades in Atlanta, Las Vegas, San Diego, Fresno and Stockton CA. Atlanta, for example, is in the process of getting 540 new 850 MHz cell sites next to the existing 1900 MHz towers.

Lithium-ion batteries are our friends. They have a great energy-to-weight ratio, no memory effect and they don't lose a charge quickly when not in use. About one percent of these batteries is recalled due to problems.

Unfortunately, these problems can include overheating, spontaneous combustion and explosions. A French teen has reported hearing a loud hissing noise before his iPhone screen shattered during a call. The photo above shows the screen, which he says launched a piece of glass into his eye.

Now you can receive iPhone push notifications instantly every time a new email comes to your Gmail inbox. The app, called Gpush, has been released by Tiverias Apps and approved by Apple.

Users can select between several options to determine how they are alerted of new mail. The iPhone will vibrate, ring, display the email message sender and subject on the lock screen (like incoming SMS), or just show a badge of how many new messages have come in on the GPush icon.