Hi, I bought a used iPhone 3GS with 2 months left on the factory 1yr warranty. I plan to keep this phone for a long time so I was wondering whether buying AppleCare would be a good investment. Questions: 1. Does it cover battery replacement? 2. Do you guys have any AppleCare experiences, bad/good? 3. Bottom line: Is it worth the $80 asking price? 4. In case of anything SUPER bad happening to the iPhone, will they replace it and how, considering the 16GB 3GS is now discontinued? Any help and advice will be greatly appreciated. Thanks in advance!