Samsung Galaxy S5, set to hit the market next month, is the only phone in the world to feature a built-in heart rate monitor. This feature will allow the phone to track the heart beat of users when they place their fingers on the sensor, placed next to the rear camera.
LG G Flex: Self-healing back
LG G Flex does not take the title of the first curved display smartphone. However, what makes it unique is that it is the only handset in the world to have a self-healing back. If the phone is scratched or dropped, all scuff marks get repaired on their own.
YotaPhone: Built-in e-reader
YotaPhone is a smartphone that has a LCD screen on front and E-Ink display (used in e-readers as it does not harm the eyes and low power consumption) on the back. The second screen allows the device to double up as a pocket-sized ebook reader.
Nokia Lumia 1020: 41MP camera
Nokia’s Lumia 1020 is the smartphone with the highest resolution camera in the world – 41MP. This is the highest pixel count for camera in any smartphone in the world today. Another Nokia phone, 808 PureView also shared the same pixel count but is now discontinued.
Micromax Canvas 4: Blow-to-Unlock
Micromax Canvas 4 is the world’s first smartphone to have Blow-to-Unlock feature. As the name suggest, you just need to blow on the handset to unlock it. This feature is also present in its successors.
Vivo Xplay S is the world's first smartphone to feature 2K (2560x1440p) resolution. This phone’s screen has more pixels than the current crop of 1080p displays, making text, videos, images etc appear clearer and sharper.
SmartNamo Saffron: Biggest screen
The smartphone (not tablet with calling function) with the biggest touchscreen in the world is SmartNamo Saffron Two, a phone dedicated to Gujarat chief minister Narendra Modi. This smartphone has a 6.5-inch screen with 1920 x 1080p resolution and 338ppi pixel density. It comes preloaded with wallpapers, videos as well as apps related to Modi.
iPhone 5S: 64-bit processor
Even though it was launched six months ago, Apple’s iPhone 5S remains the only smartphone in the world to have a 64-bit chipset under the hood. Though the handset does not have 4GB RAM or compatible apps (which make this feature actually useful), it sets a precedent for developers and the next generation of smartphones.
Gionee Elife S5.5: Thinnest body
Gionee Elife S5.5 takes the pole position when it comes to smartphones with the thinnest profile. The device is just 5.5mm thick and sports a 5-inch Full HD display.