So... on average...
1. How many minutes would a Japanese young adult spend talking on his/her keitai every month? This is so I can get an idea of what sort of "billing plan" the average Japanese person would go for, i.e. just a 55 minute plan which costs 2415 yen/month with a two-year subscription from Docomo... or something much more substantial?
2. How many mobile e-mails would the same person send per month?
3. Also, how much does the average mobile e-mail cost? Docomo's website says that i-mode usage costs 0.2 yen per packet, but what exactly is a "packet" and how many "packets" is one message?
4. Finally, if you live in Japan, how much do *you* spend on calling/e-mailing from your keitai every month?
Thanks!!! ^^
更新1:
To pink__: As you can see, I have already done my research. I would appreciate a more helpful answer from personal experience.