The Samsung Galaxy S II has a 4.3-inch Super AMOLED Plus display with 480 x 800 resolution (which is an increase of screen size, though it retains the same resolution seen in its predecessor), a 1.2GHz dual-core processor, 1GB of RAM and running on Android 2.3 (Gingerbread) with TouchWiz UI 4.0. 

It boasts an 8-megapixel camera which is capable of capturing videos at full HD 1080p @ 30fps. The Samsung Galaxy S II also has HSPA+ (21Mbps) network support, WiFi 802.11b/g/n, Bluetooth 3.0 as well as an HDMI-out with mirroring and DLNA for media sharing. 

The LG Optimus 2X is the world's first smartphone with a dual-core processor. Along with more powerful multimedia features, the LG Optimus 2X's high-performance Tegra 2 processor makes for faster, smoother web browsing and applications and lets users multitask with virtually no screen lag.  

The dual-core Tegra 2 system-on-a-chip found in the LG Optimus 2X runs at a clock speed of 1GHz and boasts low power consumption and high performance for playing video and audio. Users will experience faster web browsing and smoother gameplay compared with single-core processors running at the same speed as well as instantaneous touch response and seamless multitasking between applications.  

The LG Optimus 2X offers 1080p HD video playback and recording with HDMI mirroring that expands content on external displays to full HD quality. The LG Optimus 2X can connect wirelessly to any DLNA (Digital Living Network Alliance) compatible digital device such as HD TVs for a console-like gaming experience taking full advantage of the phone’s HDMI mirroring, accelerometer and gyro sensor. The smartphone also includes two cameras, microSD memory expandability, Micro-USB port and a hefty 1500mAh battery.