My phone died off after I came from school.I plugged to charger with a 19% charge.After,2hrs,the charge became 25% only.I taught that it could be the problem of the charger.So,I tried my tablet on it,it was charging normally,but my phone was not.So I connected my phone to my PC via USB,it charges normally on it.I can't understand what's the real problem,Help me guys