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LG Optimus 4X HD
The LG Optimus 4X HD is a slate, multi-touch smartphone running the Android operating system. Designed and manufactured by LG Electronics. The Optimus 4X HD was the world's first smartphone announced with a quad-core processor along with the HTC One X and the Samsung Galaxy S3 and the fourth phone in the LG Optimus-Android series. LG first introduced the LG Optimus 4X HD at Mobile World Congress. The Optimus 4X HD was launched with Android 4.0 Ice Cream Sandwich.〔(LG MWC 2012 | LG Blog ), February 27th, 2012〕 Since April 2013, some variants have had a Jellybean update available.〔(【引用サイトリンク】title=LG Optimus 4X HD gets Android 4.1 Jelly Bean update )〕
==Hardware==
The LG Optimus 4X HD is the first phone to feature Nvidia's Tegra 3 chip offering significant mobile gaming performance at release. LG Optimus 4X HD was also the first phone announced with a quad core processor. The chip has four physical cores clocked at 1.5 GHz in addition to a lower-clocked fifth core. The fifth core is clocked up to 500 MHz and runs when the handset is idle or doing only simple tasks, less-demanding tasks such as active standby and music playback.
LG Optimus 4X HD is equipped with a True HD IPS display with Ultra high resolution 313PPI, packaged in an 8.9 mm-thick, prism-edged design. The device comes in black and white The LG Optimus 4X HD also includes a 12-core graphics processing unit.〔(【引用サイトリンク】title=LG Optimus 4X HD specifications and reviews )〕 There is an 8-megapixel backside-illuminated sensor camera on the rear with LED flash, HDR, continuous shot, support 1080p Full HD video recorder and 1.3MP camera on the front for video, conferencing or self-portrait. The phone also includes a Li-Ion 2150 mAh battery, stand-by up to 730 h (2G) / up to 686 h (3G), talk time up to 9 h 20 min (2G) / Up to 10 hours & 50 minutes (3G). MicroSD card slot up to 64 GB, internal memory 16 GB (12 GB user available), and 1 GB RAM. It has a highly capable face unlock feature which works with the front-facing camera.〔(Details Specifications, Review and Features of LG Optimus 4X HD Android ICS Smartphone ), July 30, 2012〕
The phone has an unlockable bootloader, which allows it to run system software provided not only by LG, but also can run ROMs like CyanogenMod.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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