So at a family Christmas party, my phone had been very low on battery so I grabbed my cousins charger and plugged it in. After opening presents I went back and texted a friend and as i typed my phone turned off. It wouldnt turn back on and when I plugged it back in it showed the battery symbol on very low. So I just thought my battery died but I let it charge for the past hour and it still wont turn back on. What can I do to turn it back on??? Need help quick.