Does it make sense.....4S?

My 12 yr. old daughter needs a phone and right now Verizon has the 4S for 99¢. My worry is the fact that it's already two generations old and with the two year contract then it will be 4 gen's old. I really only want a basic phone for her right now but she will be asking for a smart phone before two years are up so why not get a smart phone now and get that part over with.

Any advice?

Jeff