Hello, last days i observed a very annoying issue with my phone. My iPhone 5 battery started turning off at 20-30% battery. Well, I tried not to get into this and live with it, but my phone now says it has now battery power at 40 and even 50%! Well, obviously it shouldn't be ike that, so I have a question. Since I bought my phone over 1,5 years ago through a carrer, I have no chance for a replacement. I saw on the internet that replacing the battery yourself is very easy. Here are my questions: 1. Will buying this and replacing my battery with it resolve the issue? http://www.ifixit.com/Store/iPhone/iPhone-5-Replacement-Battery/IF118-001 2. Would you recommend doing it at home by someone with no huge fixing-stuff experience? I mean, has anyone done this? Is it really that easy? I'm a bit worried that I'll break something, even though i replaced RAM in a MacBook like a thousand times and exchanged and optical drive with a hard disk once. Thanks everyone for your help, I'm really worried because of this situation. iPhone itself is such an expensive device that stuff like this shouldn't happen.