Is non-existent. I was eligible to upgrade my business cell phone this month while the actual 2-yr. contract is up in May. I am going with the Galaxy Note 5. I need the fastest performance for several business needs. The problem is I could not lease a phone through Best Buy on my commercial account only using personal accounts. Leasing is best for me because I need to constantly stay ahead of the technology curve to stay ahead of the competition. It costs less to lease and BB offers a better deal than going directly. After literally going in circles and bouncing around for 6 hours over the phone with half a dozen incompetent customer reps and a worthless visit to a Sprint corporate store over the course of ten days the account was changed from business to personal yesterday. Today my hotspot did not function because in the change over they screwed up lots of things including the account settings. Another half hour to make sure everything is active and working before trading my old phone in and I was off to Best Buy for the new phone. I got to Best Buy and Sprint changed my eligibility. I called Sprint and after another half hour and 2 more reps they said I could talk to a manager and possibly work something out. I just had no more patience. They simply did not want me going through BB. I could have just rode the business contract out and avoided all of the trips and headaches. I have been a customer for at least five years and will be looking at Verizon in May. Do not go with Sprint for wireless service.