A:AnswerUsually the warranty on any apple device purchase is a year. You would want to purchase Apple Care so that if anything happen to your device after warranty you will still be covered.
A:AnswerYou should be able to activate it to boost mobile as long as the phone has been unlocked by previous carrier an it isn’t a lost/stolen phone or tied into someone’s account.
A:AnswerThere is no way to know. A refurbished item is a used item that has been professionally restored to working order by a manufacturer or manufacturer-approved vendor. This means the product will show signs of wear, but has been inspected and repaired to meet manufacturer specifications and is in the original working condition, but will have signs of use, such as scratches and scuffs. This item may or may not be in the original packaging.