Coolpad Cool 1 Dual 4Gb Ram a smartphone lauched by Coolpad. I bought this phone for my sisiter in low. But after 4 month this her faced the some issue in dislpay burning. When we went on his customer care. Then they give 5 days time us. But we gotted our phone in 30 days. So customer services is not good. This phone charging is very low. It take the 5 to 6 hr for fully charging. But battery backup ia not bed. Billing charges is high compare to phone hardware, phone perfomance etc. But network quality is very best. She didnt found any issu in network.