A QuickMemo feature allows you to take notes using your finger as a stylus on a document or photo. (A real stylus, not included, can also be used for more handwriting precision.) For example, you could draw a circle around an item on a Web page, capture it as a screenshot and then email it. For Web designers and others, QuickMemo could prove to be a time-saver.
I was also impressed by the phone's Screen Zooming capability, which allows you to zoom in and out of photos, emails, texts and lists.
The biggest downside of the Optimus G for some early adopters will be that it ships with Android 4.0 (Ice Cream Sandwich), with no word yet on an upgrade to Android 4.1 (Jelly Bean).
Differences in the cameras
At least one difference in the two carrier's versions of the Optimus G will be in the camera. Sprint's will have a 13-megapixel rear-facing camera, while AT&T's version will have an 8-megapixel rear-facing camera. I didn't personally evaluate the cameras, but during its presentation, LG projected images taken with the phone onto wall-size displays that were crystal clear. (As with any phone used to take photos, one of the biggest limitations is improper lighting, and LG used plenty of supplemental artificial light to take its brilliant photos during the outdoor evening event.)
One note: The higher-resolution rear-facing camera on Sprint's version of the Optimus G protrudes slightly from the rear case, which made me wonder whether it might get scratched or damaged with heavy use. The lower-resolution camera on the AT&T version is flush with the rear case.
With all of its many great qualities, the LG Optimus G deserves to do well in the market. But it will face a wide array of new smartphones shipping in the next few weeks, including quad-core models like the HTC One X+ running Jelly Bean, and a slew of new devices which will be running Windows Phone 8.
And, oh yes, there's that iPhone 5 to consider, with Apple continuing to dominate the marketing wars.
LG seems to have arrived at the smartphone party wearing a great outfit and fabulous jewelry. But Apple may have already moved on to the after-party with its many friends.