Airtel 3G free Internet kaise chalaye

Hello dosto aaj mai aapko bataunga ki Airtel free 3G net kaise chalta hai lekin yah bahut si state me kaam nahi karati hai Lekin try karake dekhiye ye  kaam karegi ya nahi Agar kaam nahi karati hai to hame comment karake bataye  Airtel free Internet chalane ke liye kya kya jaroori hai ek android mobile our ek 3G sim