The G3 runs Android 4.4 and is powered by a Snapdragon 801 quad-core processor running at 2.5GHz. It has 16GB or 32GB of integrated storage and 2GB or 3GB of RAM. The storage capacity can be expanded by an additional 128GB using the microSD card slot.
The G3 measures 146.3 x 74.6 x 8.9 millimeters and weighs 149 grams. The company made it slightly thicker than necessary to make it easier to hold, according to Chul Bae Lee, head of Mobile Communications Design Center.
Even though it has a larger, 5.5-inch screen, the G3 is lighter than Sony's Xperia Z2 or HTC's One M8. The Galaxy S5 and the Huawei Ascend P7 are slightly smaller and lighter at 145 grams and 124 grams, respectively. The four competing smartphones have screens that measure between 5 and 5.2 inches.
On the networking side, the G3 can connect to both regular 4G networks and those that use LTE-Advanced. LTE-Advanced consists of a number of different technologies designed to help improve performance. The G3 supports carrier aggregation, which allows networks to devote more resources to some users by treating two or more channels in the same or different frequency bands as if they were one.
The G3 will start shipping in South Korea this week, and then in Europe as well as the U.S. in June. The company didn't announce pricing.
Sign up for CIO Asia eNewsletters.