Samsung’s monster, the strongest rival to iPhone 5, which had hit sales of 3 million within 55 day in the UK is on its way to appear in the U.S. at the end of the month.

Samsung's Galaxy S II, which was rumored to come along with iPhone5 has beaten its competitor in terms of a release date.

Samsung will hold an announcement for extension of its market of the highly anticipated phone in the U.S., on Aug. 29.

The Android-based smartphone has already seen remarkable success in the markets of Asia and Europe and with its features and performance, it is expected to pose threat to Apple’s iPhone 5.

Apple had acknowledged the might of the Samsung Galaxy when it filed a lawsuit against Samsung charging the company of copying iPad, iPhone and iPod designs in its devices.

The Samsung Galaxy S II is super-thin, measuring merely 0.33 inches, and weighs about four ounces. The iPhone 5 is slightly smaller in its length and width compared to the Galaxy S II.

The Galaxy S II features a 4.3-inch Super AMOLED screen with 800x480 screen resolution. The iPhone 5 will probably not come with an AMOLED screen, keeping in mind the scuffle between Apple and Samsung.

It is powered by a dual-core 1.2 GHz ARM Cortex-A9Mali-400MP GPU Orion chipset. The Samsung Galaxy S II will offer more speed in the micro-chip department with its dual-core 1.2GHz chipset, as Apple will be powered by a dual-core A5 processor which powers the iPad.

The iPhone 5 will feature voice-recognition capability, which is already provided by the Samsung Galaxy S II, as it allows users to control the phone with a few selected words.

With the NFC (Near Field Communication)-enabled in the Samsung Galaxy S II, it can be used for contact-less mobile payments. However, Apple is expected to forgo NFC-capability in the upcoming iPhone 5; UK carriers revealed that Apple will abstain from NFC as it believes that there is no industry standard related to the technology.

Other features in Samsung Galaxy S II are an internal memory configuration of 16/32GB with 1GB RAM. Galaxy S II sports an 8MP rear-facing camera with 1080p video capture capability and also has an additional 2 MP front-facing camera for video chat.

"If the U.S. versions are anything like the international versions, these are going to be spectacular smartphones," said Sascha Segan, lead mobile analyst for PCMag.com.

While the iPhone fans are still stuck with rumors about the launch date of iPhone 5 — September or October, the Samsung Galaxy S II has made its way. Will people still wait for iPhone 5?