Default SHV-E120s No network

My causin bought for me samsung SHV-E120s from china which when i put Airtel Gsm band 900mhz to 1800 mhz only shows zero with across at the centre on whre gsm network bars comes. The fone Model no:SHV-E120s ,Android version 4.0.4,Baseband SHV-E120s.UH17.1736.ST. Kernel version:3.0.8-1045781,[B][COLOR="Black"][B][COLOR="Red"]Build number:IMM76D.UH20
What do i need to do to this fone to make it work and bring network bars.