Oftentimes when my friends get mad enough to throw a phone at a wall or abuse the device, it's due to the recipient not answering their phone. Also, this was the most common reason that people destroyed phones when I was working for Verizon Wireless in technical support - in fact, since about 40% of my calls were focused around, "Well I did X to my phone and bought/received/found a replacement, can I please change the device on my account to this one?" You could call me a field expert on the issue of mobile device destruction.
I'd imagine that since you have far more free time than other people, your brain has more time to stew on mishappenings in your dealings with ultraslags and she-beasts, and you find yourself plagued with questions that have more basis in self-doubt than they do in reality. Thus you call these women you've acquainted yourself with at odd times of day - the ones that the rest of us are usually busy doing something, like 2:00 on a weekday afternoon. And after several failed attempts at reaching the person, you break your phone in frustration.
That's just an educated guess, though.