Samsung Galaxy S5 is the next-generation flagship smartphone of the famous Galaxy series. A successor to the highly popular Galaxy S4, this handset pushes the specs forward showcasing a larger 5.1-inch Full HD Super AMOLED display, essentially upgrading it to the phablet segment. Galaxy S5's touchscreen offers a resolution of 1920 x 1080 pixels at a huge pixel density of 432ppi for breathtaking clarity. This powerful device comes with Ingress Protection 67 (IP67) certification for dust and water resistance, a first for any Galaxy series handset. As far as changes in physical design go, the handset is about 6mm bigger than its predecessor and offers an app switcher key instead of the menu key button. The home button comes with a fingerprint scanner that serves unlock/app verification purposes when swiped over.

Unveiled at the Mobile World Congress 2014, the handset features an elegant leather-like textured back that gives a good feel and an easy grip. It improves on hardware specs offered on the Galaxy S4 as it features a mighty 2.5GHz Quad core app processor along with 2GB RAM which assists in blazing fast multitasking for all kinds of apps and multimedia. Its 16GB ROM comes preloaded with Google's Android OS v4.4 (KitKat) that allows access to Play Store where users can download over 1,000,000 apps, games and utilities. Storage capacity of the phone can be increased up to a whopping 128GB via MicroSD card.

The device sports a stunningly powerful 16MP 1/2.6-inch rear image sensor with the world's fastest built-in Phase Detection Auto-focus for capturing HD images in all kinds of lighting situations (operation speed up to 0.3 seconds). It can also record 4K UHD movies at 2160p resolution (regular Full HD is 1080p), taking videography to a whole new level. The primary camera comes with a built-in flash on the back along with two other sensors underneath. These are heart rate monitors, made available for the first time on a Samsung smartphone and clearly advocating Samsung's resolve to promote a healthy stay-fit lifestyle. 

Another 2.0MP camera is available at the front for self-portraits and video calls. Other camera features include HDR (Rich tone) for improved capture in back light, Selective Focus (with background blurring), Virtual Tour Shot, 16:9 aspect ratio (primary), 3840 x 2160 UHD 30fps resolution, faster AF for clearly capturing moving objects, . 

Samsung Galaxy S5 offers the following amazing features:

S Health 3.0 - An enhanced version of the popular S Health app that comes with a personal fitness tracker. You can use it to monitor your workout progress. It includes a pedometer for counting steps, diet charts as well as exercise information/logs. You can also monitor your heart rate all along (by placing your fingers on the sensors built below camera flash).

Heart Rate Sensors - Built below the camera LED flash. Calculates your current heart rate when you place your finger on the sensor.

Gear 2 Compatibility - You can connect your Galaxy S5 with a (separate) Galaxy Gear 2 accessory and use the phablet remotely. You can also take calls and receive all text/app notifications from your phone right on your Gear 2 smart watch.

Download Booster - A new technology developed to offer you the fastest downloads ever on a smartphone. It combines the LTE (Cat.4 (150/50Mbps)) and Wi-Fi and lets you split the download between the two (when both available) so allow faster transfer speeds. 

Multi Input Multi Output (MIMO) - The Galaxy S5 comes with a 5th generation Wi-Fi 802.11ac and 2x2 MIMO with twin internal Wi-Fi antennas to improve signal reception as well as increase connection speed.

Finger Scanner - Available on the home key, this scanner delivers next-generation security to keep your data protected. It also offers a quick way to unlock your phone by swiping your finger over the sensor key. You can even select settings to provide fingerprint instead of phone passwords for access to Samsung services.

Ultra Power Saving Mode - Turns the display into Black & White instead of colored one. It also automatically shuts down all unnecessary apps/features and sticks to basic operation so you never miss that all important call or text even when battery is critically low.

Other notable features of Samsung Galaxy S5 include – Wi-Fi connectivity, NFC, Bluetooth 4.0 BLE / ANT+, microUSB 3.0 interface, IR Remote connectivity, TouchWiz UI, S Finder, Quick Connect, Private Mode, Kids Mode, H.263/H.264/MPEG4 video formats, Snapdragon 801 MSM8974-AC chipset, Adreno 330 GPU, 8.1mm thin construction, accelerometer, gyro scope, proximity sensor, compass, barometer, gesture input, preloaded Samsung apps, Google integration, GPS/GLONASS, 3.5mm stereo jack and a high capacity 2800mAh battery.