At Christmas my dad bought me an iPhone 5 from someone that had barely used it. Everything was in great condition, pretty much brand new. Only thing is that the warranty had expired. 3 months after I got it, the battery started acting up. No chargers would charge my phone. So my dad brought it into a store (not exactly sure if it was Apple or another store) and they said the charger port was burnt. They replaced that and it still wouldn't work, so they replaced my battery. It charged with some cords but not others. It worked for less than a day, and the battery would drain extremely quickly (20% in 15 minutes) and it took a good 7-8 hours for it to be completely charged. Just today, the battery stopped working again and nothing will charge it. I don't want to have to be replacing my battery every week. I have never done anything to mess with the phone or battery, and I personally have only had it for 3 months. I've read about people getting their phone replaced even though their warranty was over. Would they replace my phone? Or will I have to buy a new one?