LG G3 vs HTC One (M8)
Above average meets excellent.
LG G3 exhibits above average call quality, both in the earpiece, and through the noise-canceling microphones. The output volume is strong, and the mics relayed our voice clean and recognizable to the other end. The earpiece is powerful, too, without hiss or distortion at the highest volume ends.
Phone calls made with the HTC One (M8), on the other hand, sound excellent on both sides. The top speaker gets the role of an earpiece, which makes the voices coming in loud, clean, and without crackling even at the highest volume setting. The two noise-canceling microphones also captured out voice clearly, without background noise to disturb the conversation.
The G3 tops the flagship battery endurance ranks this season, though the One (M8) scores pretty well, too.
During the unveiling event, LG didn't speak much about the battery life out of the 3000 mAh juicer on its first phone equipped with a high-res Quad HD display. It simply clarified that the phone's endurance is commensurate with one that has similar specs, but a 1080p panel, thanks to the adaptive frame rate and clocking tech in the phone. Since the 5.5" Quad 1440x2560 pixels panel is made with the advanced low-temperature polysilicon (LTPS) technology, the screen is sipping power, and able to halve its refresh rate when displaying static content, like pictures, or article pages, just like with Sharp's IGZO displays.
Officially, it pegs the G3 as capable of up to 23 days of standby in 3G mode, and 25 when connected to an LTE network. The talk times given is 21 hours in 3G mode, which is a very good result. In our battery test, the G3 lasted 6 hours and 14 minutes, which is a pretty average result, but might be expected, considering the large display with Quad HD resolution.
The HTC One (M8) has been equipped with a smaller, 2600 mAh battery, although the difference in capacity shouldn't worry you much. According to the manufacturer, that should suffice for up to 20 hours of 3G talk time, and stand-by time is quoted as 20.7 days. In addition, running our custom battery benchmark on the handset produced a result of 7 hours and 12 minutes, which is very good. Having this in mind, we're confident that if you're not pushing it too much, you'll squeeze day and a half or two worth of usage out of the HTC One (M8), without reaching for a charger. And let's not forget to mention the handset's extreme power saving mode. Turning it on will shut down all of the phone's non-essential features, but may extend its usage time dramatically.
The G3 seems to be better in pretty much every way, yet the One M8 is not far behind. LG G3 has the larger screen with a much higher pixel density yet the One (M8)'s display is more than adequate for any use as well.. LG might have stuffed the G3's 5.5” panel in a relatively compact frame, but the premium aluminum unibody of the One (M8) is still easier to operate with one hand. The G3 might sport a tad faster processor, and a version with 3 GB of RAM, but in everyday interactions it doesn't feel faster than the One (M8).
When it comes to the camera, however, this important section goes entirely on the G3's side. LG's handset has a great 13-megapixel optically-stabilized camera with a much higher image and video quality than what the 4-megapixel camera of the HTC One offers. HTC One M8's advantages before LG's finest, besides the premium design, are the longer battery life, and the better sound output.
LG G3 vs HTC One (M8) - Call Quality, Battery and Conclusion