I was a Sprint customer, now I am with T Mobile due to the merger. First, they lied to me. I was told I had to get a new phone before the end of December or it wouldn't work. When I went into the store, I was told I had until March, but went ahead and upgraded anyways. The phone has bugs and keeps "losing" the network. My incoming text arrive a day after they are sent. This is a problem as my son checks on my welfare several times a week and it throws him into a panic. He resorts to calling neighbors to check on me. As soon as my contract is over, I am switching carriers. Also, don't go into the store for help, they are not friendly and you will be billed for it on the next month's bill.