I got to know about the Ampere app, which basically tells you how much amps does your phone draw while charging. I have noticed that my charger keeps on decreasing from 680 mA to 0 mA in 5 minutes and then my phone does not charge. I assumed that the problem is due to the charger and I replaced 2 chargers but couldn't catch what causes this problem. Can someone tell me is this a problem of my device or inputs in the charger or something else!!
P.S.- I am using properly matched chargers.