Samsung Galaxy S2
Hardware
The Samsung Galaxy S II features a flat 4.3-inch Super AMOLED Plus display with a 480x800 (WVGA) resolution, upgrading the previous generation's PenTile arrangement to a sharper, full RGB-matrix layout. The panel is protected by Corning Gorilla Glass and anchors a physical home button flanked by capacitive Menu and Back keys. At launch, its razor-thin 8.49mm profile made it one of the slimmest smartphones in the world, originally debuting in Black, with White and Pink editions following later. True to the era, North American carrier variants broke away from the global design: the Sprint Epic 4G Touch and T-Mobile variants stretched the display to 4.52 inches and traded the physical home button for four capacitive touch keys, while AT&T maintained the 4.3-inch frame but squared off the chassis. Under the hood, the global flagship model runs on a 45nm 1.2 GHz dual-core Exynos 4210 processor paired with a Mali-400MP4 GPU, though specific regional and LTE-equipped variants—including T-Mobile's version—swapped the silicon for a 1.5 GHz dual-core Qualcomm Snapdragon S3 (APQ8060) processor with Adreno 220 graphics. The baseline configuration standardizes 1 GB of RAM with 16 GB or 32 GB of internal storage, expandable up to an additional 32 GB via a dedicated microSD slot. Power is delivered by a user-removable 1650 mAh Lithium-Ion battery (bumped to 1800 mAh or 1850 mAh on larger US and LTE variants), which charges over a micro-USB 2.0 port that famously introduced MHL (Mobile High-Definition Link) for wired 1080p TV-out mirroring alongside USB On-The-Go (OTG) host support. Imaging received a substantial hardware upgrade with an 8 MP rear camera module featuring an LED flash, autofocus, and 1080p Full HD video recording at 30fps, complemented by a 2 MP front-facing camera that was standardized across all regional variants. Device security relies on Android's native pattern, PIN, and password systems, backed by an expanded array of internal sensors that introduces a 3-axis gyroscope alongside the standard accelerometer, digital compass, proximity, and ambient light sensors. For connectivity and audio, the lineup brings dual-band Wi-Fi (2.4 GHz and 5 GHz) with Wi-Fi Direct, Bluetooth 3.0+HS, optional Near Field Communication (NFC) capabilities depending on the market region, a 3.5mm headphone jack, and a stereo FM radio with RDS.