How often to do you change your cell phone?

Wow...I don't personally have a cell phone, but my hubby does, for business. You aren't going to believe this, but the phone he has now was the very first one he ever got. It is an "old style" Nokia, from about 8 years ago. It still works great. Someone looked at it about a month ago, and told him that when he changes cell phones, (if he ever does, lol), he can sell it on EBAY for about $100 as of right now.

i don't change mobile phones so much. since 1996, i only changed 6 times. sometimes, it depends on my mood. but most of the time, i don't feel like changing everytime because it's just a waste of money.

my last time was 10 years ago

I usually change cells very frequently but not without any reason. I change my cell if. 1.) There is a problem in the one I am using. 2.) I find a cell very attractive so I get it. 3.) I cant find where I have put my phone and if I dont find it after searching an hour than I usually buy new one. At the moment I am using: Nokia N91 Also Own (Dont know where they are biting dust, prolly in mah store room): Nokia N93, Moto Razr V3 (BLK), Nokia 6680, Nokia 1110, Nokia 1100, Nokia 3310, Nokia 2100, Samsung R220, Nokia 5320, Nokia 7210, Nokia 6600

I change my cell phone when any new cell phone comes to market...It can be in 6 months or 3 moths or even one month! Because every time a new cell with new features are available in market.