Yes, it would be like bringing the neandarthal cave man to swipe left and right on a smartphone. He would be in the shock of his life. Freezing the body would not work because of the freezing process a lot of the tissue would suffer damage. Research is still in its early years. I am not sure that I would choose immortality if the people that I care about wouldn't be around anymore.

I would hop in a.s.a.p in a time travel capsule if they would make such a thing safely in my lifetime.