While iPhone 5 is taking its time to reach the market, the ring is left for Android smartphones to battle for the hottest spot in the summer.

HTC Sensation 4G and Samsung Galaxy S2 are considered the top rivals to each other, both sporting Android 2.3 Gingerbread.

HTC, the Taiwanese technology giant, rolled out with HTC Sensation 4G on June 15 in the U.S., carried exclusively by T-Mobile for $199.99.

Samsung Galaxy S2 is reportedly hitting the shelves in July for Verizon, AT&T, and Sprint, respectively as Function, Attain, and Within.

HTC sensation comes with the S-LCD capacitive touchscreen with the resolution of 540 x 960 pixels on a 4.3-inch curved high-resolution qHD display with 540 x 960 pixels, 8-megapixel camera with 1080p HD video recording capabilities, front-facing shooter for video calling, and Android 2.3 with HTC's Sense 3.0 user interface highly popular among the users.

Samsung Galaxy S2 rocks a 1.2 GHz dual-core Exynos processor, 4.3-inch Super AMOLED Plus capacitive touchscreen with resolution of 480 x 800 pixels, 8-megapixel camera with 1080p HD video capabilities, front-facing camera, and Android 2.3 with TouchWiz 4.0.

As far as weight and volume of the smartphones, Samsung Galaxy S2 is lighter and thinner than HTC Sensation 4G, with the former weighing 116g and the latter 148g.

Here are some live comparisons between the two smartphones.