So, first off, my Zmax pro will charge fine and I unplug it when it gets to 100 and the battery goes down pretty quick and my battery usually dies around 60 to 70 percent and if I try to turn it on it acts as if my phone is dead until I put it on the charger. Also, recently, when I put my phone on the charger I have to hold the charger a certain way and it charges so slowly. Also if I open Snapchat when my phone is at 75% or less my phone dies instantly. I am going crazy please help