4. Motorola.
Google is no longer just a provider of operating systems, it has become a smartphone vendor itself with its $12.5 billion acquisition of Motorola Mobility. Although the primary motive of the purchase was to take Motorola's wide portfolio of patents in order to fend off litigation against the Android, Google's execs are saying that Google's venturing into hardware. Verizon

After playing hide-and-seek for the past nine months, Motorola's 4G LTE offering Droid Bionic is now available on Verizon.

Motorola Droid Bionic will run on the latest version of Google Inc.'s smartphone operating system, Android 2.3.4 Gingerbread OS. The phone sports a 4.3-inch Qhd display with 960x640 screen resolution. It is powered by a dual-core 1GHz TI OMAP4 processor. Droid Bionic features an 8MP rear-facing camera with 1080p video capture capability. It also has a front-facing camera for video chat. It offers 16GB internal memory and optimizes 1700mAh battery. The phone weighs 5.5oz and is about 0.45-inch thick.

It is also compatible with Motorola Atrix laptop dock. The laptop dock has an 11.6-inch display with 1366x768 screen resolution and a full keypad. The laptop is powered by software called Webtop which is a Linux-based OS. The phone can be used to make and receive calls in the laptop environment while running the apps in separate windows. The only app the laptop runs outside the phone is the Firefox browser.

However Droid Bionic may not be able to enjoy its hallowed title of the most powerful phone on Verizon LTE network for long as rumors of some strong 4G LTE contenders have been doing rounds lately.

Here is a list of the top rumored 4G LTE phones which can give Droid Bionic a run for its money:

HTC Vigor:

It is rumored that HTC Vigor will sport a 1.5GHz dual-core processor. The phone, which is touted to be a replacement for the HTC Thunderbolt, is expected to don a 4.3-inch display with 1280x720 screen resolution. Vigor is surmised to be fitted with an 8 MP camera. It will run on Android Gingerbread juice. Also it is expected to offer 1GB RAM, 16GB internal storage and is also surmised to incorporate Beats Electronics Technology - best known for the high-performance line of headphones backed by hip-hop artist /producer Dr. Dre.

Samsung Galaxy S2 LTE:

The Galaxy S2 LTE is a larger cousin of Galaxy S2 both in terms of size and hardware specifications. The Galaxy S2 LTE sports a 4.5-inch Super AMOLED Plus display with 800x480 screen resolution. It is powered by a 1.5GHz dual-core processor and offers 16GB internal memory. The phone is 0.37-inch thick and weighs 4.6oz. Galaxy S2 LTE will also feature an 8MP rear-facing and 2MP front-facing cameras. It is fitted with a Li-on 1850 mAh battery. The phone will come pre-loaded with Android Gingerbread. It was recently showcased at IFA Germany.

HTC Holiday:

Most recently, pictures of the HTC Holiday were released by an XDA Developer forum member. It is rumored that HTC Holiday will feature a 4.5-inch capacitive screen with 960x540 screen resolution. It is expected to be powered by a 1.2GHz dual-core Qualcomm MSM8660 processor. It will offer 1GB RAM and will sport an 8MP camera. Holiday will likely run on Android Gingerbread juice. The phone is rumored to be the first phone to run on AT&T's LTE network.

Samsung Stratosphere:

Recently Engadget spotted Samsung Stratosphere codenamed SCH-i405 in an FCC filing. The phone with a QWERTY sliding keyboard is rumored to be destined for Verizon's LTE network. The phone is expected to come pre-installed with Android Gingerbread and will feature a 4-inch Super AMOLED screen with 800x480 resolution. It is expected to be powered by a 1GHz single-core processor. It offers 512MB of RAM, 1800mAh battery and a 5-megapixel rear and a 1.3-megapixel front camera and 2GB of internal storage.