Hey guys, this is my first post here and I really hope you can help me. I have an old iPhone 3G with iOS 4.2.1 and since a week ago it's battery isn't lasting too long. I don't use 3G, only wi-fi, so it's always off, but now the consuption of battery it's like 3G is on, almost 1% for each 2 minutes. Even when it's in stand by... today it lost 20% of battery in 3 hours and the ONLY things I did was 2 calls that didn't last 2 minutes. The first time I noticed this was when I was reading on it in bed. When I went to sleep I left it with aproximately 60-70% of battery. When I woke up in the next morning, the battery was COMPLETELY DEAD, no charge at all. Since then the battery has never been the same, but before this day, it was normal. The only thing I did in these past few days was to add some sources in Cydia, but I really don't think that was the cause.