Guys I think its not good to buy second hand mobiles because its risky whether the phone works good or no with no guarantee.Most of the times we do not come to know what is the fault in it, mobile repairing person knows it well.There may be changing of display due to some reasons which a common man could not come to know.People also buy second hand mobile due to shortage of money but these days we can get a well featured new mobile within the budget which is 100 times better than second hand mobles!