Karbonn quattro l50, in my opnion is good mid range phone. I’m using and my satisfied by his performance because I use it for my project and presentation, if you want a phone of mid range for simple uses. I think u can buy itKey features2gb ram and 16 rom5 inch display2600 mAh batteryLight sensorBut after few week the phone’s battery get immediately low. The battery life is very bad. It’s also gave very bad performance when I try to play high performance game like coc, shadow fight, etc. So according to me it is good for simple uses but bad for high performance.