My phone was working fine, and charging fine, but when i woke up in the morning and went to check my phone the battery was at 35%. I unplugged my phone, and then plugged it back in. I waited a couple minutes and then when i checked it, it still wasn't charging. I took my battery out and put it back in after 15 min, and tried again... still nothing. So i took the battery out again and took the battery out of my cousins phone (Same exact phone,) and it still wouldn't charge. I tried plugging his phone in with my battery and it worked fine. So, what should i do? Also if i do need a repair, around how much would it cost? Thanks everyone!