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I'll pass the dumb phone portion of my life because I can't recall.

Longest was iPhone 4. Only because I got it at launch and waited until iPhone 5 launched which wasn't until over 2 years later.

Shortest was 3 days. Optimus G Pro. Too heavy, large, for my liking. Terrible speakers and limited headphone volume. 100% was roughly 75% of my iPhone 5 and S4.
 
Shortest is 2 weeks with my iPhone 3GS. Camera is broken so no use to me.

Longest is 1.75 years with my Galaxy Note 2 (on and off). Very great device so far. And nice for Netflix.
 
30 min. Samsung galaxy note 2 refurb. Brought it for "free" add a line.

Immediately "flipped" it on craigslist for $500 cash. Than canceled the add a line one month later and paid the $315 etf.

Easy $180 profit. Got activation fee waived as well.
 
Nexus S 4G - 5 months. Replaced with a Sprint GS2 (Epic 4G Touch)

Galaxy S2 AT&T - 2 weeks. Replaced by iPhone 4S AT&T

Galaxy S4 - 2 months. Replaced by iPhone 5S.

Reasons replaced: wanted the better phone and that's what I got.
 
Last phone I had for two years was a Nokia PT-11 since then I am a sucker for new stuff and barely keep phones for a year (despite being on 24 months contract).

Speaking of sucker, there are always people sucking up year old phone for stupid money, so that makes it a heck of a lot easier to fund my silly smartphone addiction :p
 
I first got a cell phone in 1998. From 1998 to 2010, I owned only 3 phones. I cannot remember how long I had each, but I averaged 4 years with each of those phones. Two were stock phones from my carrier, Fido. The last one was a Nokia 6126 flip phone (best phone I ever used).

In 2010, I decided to get a smartphone. It was the Nokia N97. It had to be the worse smartphone every. I ditched it after 7 months. I still have it and it is pretty much just a music player now. The FM transmitter is a cool feature.
 
Shortest: Blackberry Storm - 2 weeks
Longest: Apple iPhone 4S - launch day until last week
Now: see sig
 
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