Should you replace your iPhone 4S or Samsung Galaxy S2 with a new powerful and amazing smartphone from HTC?

Giving up an iPhone 4S -- that cost $199 on a two-year contract or $649 contract-free -- is not a no-brainer. The fifth generation iPhone has been maligned by critics for its lack of design changes from the previous model, its "small" 3.5-inch screen, and its lack of 3G support. Still, the iPhone 4S has delivered record sales to due to brand loyalty and the device's improved processor (dual-core A5 chip) and camera (iSight camera that can shoot 8 MP stills and 1080p videos) and a revolutionary virtual assistant named Siri (exclusive to the device).

While the Samsung Galaxy S 2 hasn't surpassed iPhone 4S in sales, it is the Korean electronics giant's best-selling smartphone to date. Released in parts of the globe more than five months prior to the iPhone 4S launch in October last year, the Galaxy S 2 still remains among the world's best Android phones. The Galaxy S has a 4.3 inch WVGA Super AMOLED Plus screen display, 1.2 GHz dual-core "Exynos" system on a chip (Soc) processor, and an 8 megapixel camera with flash and full 1080p high definition video recording.

HTC Corp. introduced at the MWC 2012 the HTC One, an Android phone with a giant 4.7-inch HD screen and a 1.5 GHz quad-core processor.

Here are the full specs of HTC One:

* Measurement: 134.36 mm x 69.9 mm x 8.9 mm

* Weight: 130 grams with battery.

* Display: HD 720p touch

* Screen: 4.7-inch Corning Gorilla Glass 2 screen with 1280 x 720 resolution

* Platform: Android 4.0 with HTC Sense 4

* Memory: 32 GB storage, 1 GB RAM

* Network: HSPA/WCDMA - Europe/Asia: 850/900/1900//2100 MHz

GSM/GPRS/EDGE - 850/900/1800/1900 MHz

* Sensors: Gyro sensor, G-Sensor, Digital compass, Proximity sensor, Ambient light sensor

* Connectivity: 3.5 mm sterio audio jack, NFC, Bluetooth, Wi-Fi, DLNA for wireless streaming from phone to TV or computer

* Cameras: 8 megapixel rear camera with auto focus, smart LED flash and BSI sensor, 180p HD video recording; 1.3 megapixel front camera (720p for vieo chat)

* Sound enhancement: Beats Audio

* Battery: 1800 mAh

In the United States and Canada, the HTC One will called HTC One XL or HTC EVO One and will carry a 1.5 GHz dual-core Qualcomm S4 chip due to incompatibility between the Tegra 3 and LTE.

benchmarking tests indicate that the model with the dual-core Snapdragon S4 is beating Tegra 3-based phones and other phones, making it the fastest Android phone ever.

With its quad-core processor and the 4.7-inch display, the superphone from HTC makes the Galaxy S 2 and the iPhone 4S like your grandfather's smartphone.

Should you replace your "inferior" iPhone 4S or Galaxy S 2 with a bigger and faster HTC One? Are you willing to pay up the huge termination fees and spend $749 (GBP 472 in Europe) for this phone?

You may not want to open your wallet yet. Apple as early as June is expected to unveil the mythical iPhone 5. The sixth generation iPhone is expected to have a 4.6-inch display, which is a first for an iPhone (previous models had a 3.5-inch screen real estate). The iPhone 5 is also expected to have a higher resolution "retina display", a bigger battery, a quad-core processor, and a new design.

Samsung Electronics won't be outdone as it is due to release the Samsung Galaxy S 3. The Galaxy S3, which is rumored for an April or May release, is expected to have a 1.5 or 1.8 GHz quad-core Exynos CPU, 1 or 2 GB RAM, a 12-megapixel camera and 4.7 or 4.8-inch Super AMOLED HD screen. It has also been rumored -- although unlikely -- that the Galaxy S3 will have 3D support. The phone will arrive with the Android 4.0 Ice Cream Sandwich operating system. The high-profile camera of Galaxy S2 may also get updated to 12-megapixel shooter. The device will also have 4G LTE network support, optional Near Field Communication (NFC), microUSB version 3.0, assisted GPS with GLONASS, Bluetooth version 4.0, Wi-Fi with Wi-Fi Direct plus hotspot functionality and dedicated microHDMI port.

With Apple and Samsung fail to present updates to their flagship smartphone soon, HTC's status as the world's most amazing smartphone may only be temporary.