nothing wrong with the phone. or battery. it just flat out shuts down. i've had 5 majority of time and only had phone 4 months now. i don't think i've ever talked 60 minutes when running 4.5 so i don't know if it's a phone issue or software. but i'm really thinking the software. and i don't like 4 enough to go back in time.
you know how it is when talking to an ex. conversations tend to get lengthy at times.