I cannot update Google play,does sny body no how to do this.

[AC Question]

I can not get on Google play. I push the play store icon aND it flashes then goes right back to it. I try to get on u tube and the message say that I need to update Google play . Need help. I wonder if it has anything to do with my new phone, because it is no longer there at t I just pre pay monthly . It is called airvoice. Thank you. I need help!!