What Jio should do is charge full ₹1500 while giving a free service for first 12 months? Users are sacrificing most here buy buying a carrier locked handset. If service goes bad they are stuck with. With a free annual plan. It can be attractive to users. They can also offer a discount on renewal of next 12 months. Cycle can continue like this. They don't have to worry about buying a seperate handset along with separate plans. Here they can have both.