Microsoft added 2 shells in its wings ( Lumia 640 and the variant 640 XL).

 Microsoft added two phones to its Lumia lineup.

The first one is a Lumia 640 and the second one is its variant 640 XL.
Both phones will  have the Windows 10 update as soon as it is  released.

Microsoft Lumia 640 and 640 XL

          Here are the specifications of both the phones.
          Firstly the Lumia 640,

• 1 GB of ram with 1.2 GHz quad core snapdragon processor.
• 5 inch Screen with 1280 x 720 pixels display.
• 8 MP primary camera and 0.9 MP wide angle selfie camera.
• 2500 mAh battery.
• 8 GB mass memory and expandable up to 128 GB.
• Sensors Ambient light sensor, Accelerometer, Proximity sensor, Magnetometer, SensorCore.
• Pixel density of the display is 294 ppi and dual sim support.

       The other one 640 XL itself has two variants (The difference is the 4G technology in one phone)
       Specifications of the 640 XL and 640 XL LTE 4G are as follows.

• 1 GB of ram with 1.2 GHz quad core snapdragon processor.
• 5.7 inch Screen with 1280 x 720 pixels display.
• 13 MP primary camera and 5 MP full HD selfie camera.
• 3000 mAh battery.
• 8 GB mass memory and expandable up to 128 GB.
• Sensors Ambient light sensor, Accelerometer, Proximity sensor, Magnetometer, SensorCore.
• Pixel density of the display is 259 ppi and dual sim support.

      The pros and concern both are highlighted.