Microsoft Lumia 550 smartphone was launched in October 2015 with a 4.70-inch touch screen display with a resolution of 720 pixels by 1280 pixels at a PPI of 315 pixels per inch. It is powered by 1.1GHz quad-core Qualcomm Snapdragon 210 processor and it comes with 1GB of RAM. The phone packs 8GB of internal storage that can be expanded up to 200GB via a microSD card. As far as the cameras are concerned, the Microsoft Lumia 550 packs a 5-megapixel primary camera on the rear and a 2-megapixel front shooter for selfies. It runs Windows 10 Mobile and is powered by a 2100mAh removable battery. It is sleek in thickness. The Microsoft Lumia 550 is a single SIM(GSM) smartphone that accepts a Nano-SIM. Connectivity options include Wi-Fi, GPS, Bluetooth, FM, 4G. Sensors on the phone include Proximity sensor, Ambient light sensor, Accelerometer. I always recommend everyone to buy the product for its amazing performance.