BSNL 4mbps 175GB plan is cheaper than Airtel 4mbps 150GB plan which is now discontinued.
BBG Combo ULD 2150 has 4 Mbps upto 175 GB, 256 Kbps beyond in selected Circle/SSAs (Karnataka Circle, Tamilnadu Circle, Hyderabad SSA, Faridabad SSA, Noida SSA, Gurgaon SSA, Gaziabad SSA only)