Coolpad cool 1 dual is from Coolpad company. I have used this phone and I am totally disappointed with this phone. The phone has dual rear camera which both are good. But phone has 8 mp front camera and fornt camera is worst, you can’t click cool selfie from this phone. Battery backup is pretty good. The phone has 4000 mah battery which is enough for one day heavy usage. Phone’s looking is not too good. Network coverage is too bad. sometimes phone’s network goes. Audio quality is also poor. Hanging and lagging issues with this phone. phone get heats up while playing games. Overall I wasted my money on it.