I had been using this phone for near about 4-5 years and it havent given me any problem since I bought it. Let me tell about the specifications of this phone.
It has a Quad core 1.2 GHz processor, and around 1.5 Gb of RAM which helps the device to run smoothly.
The device has 8 GB of internal memory and upto 32 GB expandable external memory which enables the user to use the memory to the fullest.
It also has a 8MP rear camera and around 1.8 to 1.9 MP front HD camera and the camera software used in it is also good.
Grand 2 also consists of 2600 MAh battery. The battery backup is also good but I had to face a problem like the device suddenly turns off suddenly and when turned on, the battery percentage decreases.
Overall the phone is very good in aspect of performance.
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