Hello. 2 days ago my xiaomi mi3 was with 3% of battery and as always i went to charge it with my wall charger that came with my phone but nothing happen. Phone wasnt responding with charger. I couldnt charge it so battery goes 0% of battery and phone is closed. I left it for almost 10 hours and phone was still dead. I tried another wall charger but it didnt do anything at all. I tried to power up my phone (i was keeping the power button for more than 20 seconds) but it never power up. I tried vol+power but still nothing, vol-power still nothing. If i plug it in on my computer it will not recognize my phone nor charge it. Is the battery dead? I only have my phone for 2 months..