What's the formula for success? Clearly, Samsung knows a thing or two about this, having followed a similar strategy for its Galaxy S, S2 and S III smartphones – each model a bigger success than its predecessor.

The Samsung Galaxy S4 is a great smartphone with a lot of features and capabilities that help it match and exceed most of the smartphones in the market. The evolution of the voice, motion and visual interaction takes smartphone interaction to a new level.

Very advanced high performance processor; latest Android operating system; outstanding screen; camera; video and a lot of unique applications

Too big for some users

The most awaited phone in early was without a doubt the Samsung Galaxy S4. It was unveiled theatrically by Samsung in New York City by actors depicting the features it could capture. Well all that was really fascinating but is the phone worth the upgrade from Samsung Galaxy SIII, hell yes.

It's one of the most anticipated handsets of the year, it's the follow-up to one of the best-selling phones of last year, and it has been hyped to the extent that Samsung is starting to look like it's going to teach Apple a thing or two about generating anticipation.

A brilliant phone in almost every way; subtly better design than SGS3; loads of new gesture and eye-tracking features; powerful

A bit complex now; incredibly expensive; not a huge leap from the SGS3; battery life is still bad

Samsung has been on a winning streak lately, producing some top-notch handsets and winning acclaim around the world. The newest model in the four year strong Galaxy range has certainly been hyped up, and this handset now grabs almost as much attention as Apple's coveted iPhone.

Very fast performer; Two days battery life possible from a 4G phone is excellent; Fast virtual keyboard; Works as a remote control

Unique camera modes aren't easy to use; Finger-less touch modes need a lot of work; Still a very plastic phone; Can't change the bottom icon dock

The phone exceeded my expectation of a smartphone and had all functions I needed. Though the battery can get a little too warm when watching videos on the phone.

S4 really suckz.. My friend just bought it 3 months back and already we have given it thrice to the service center. Motherboard has already been replaced. There is a manufacturing defect with the phone but they never accept it.

Samsung Galaxy S4 is the latest addition in the Galaxy series from the South Korean manufacturer. Hoping it to be the best selling smart phone in the market, Galaxy S4 was released as a worthy successor to the mighty S3.

Impressive HD screen; Great performance; Good battery back up; Impressive camera; Dual shot camera

Unimpressive design; Poor low light camera shots; No FM

Nearly half a year after its initial release, the Samsung Galaxy S4 ($199.99/16GB with 2-year contract) remains a top option on every carrier it's available on. The blinding number of features and impressive performance keep the S4 at the front of the pack.

Dizzying number of features; Incredibly fast; Ships with Android 4.2.2; Relatively small for its display size; Spectacular call quality

Limited storage on 16GB model; Low-light camera performance could be better

The phone has an awesome screen Comes with too much bloatware(does take some time to clean it up) The battery life is about as long as you would expect from a 5" display phone this thin(1 day if you don't use it too much)