<p>NEW YORK (<a href="http://www.thestreet.com" target="blank">TheStreet</a>) -- When it comes to favorite cultural trends, we can be downright possessive -- even addictive -- in our behavior, whether it's a new convertible, season tickets to the Red Sox or high-end Jimmy Choo pumps .
But all of those pale in comparison to what really matters to Americans -- their smartphones.
Bank of America says consumers have such a death grip on their beloved phones that they "couldn't last a day with their mobile phones."
Some demographics value their phones so much that they rank it as a higher priority than their personal hygiene (that means you, millennials.)
Check out these statistics from the study: When asked how long they could last without your cellphone, 13% said it would be less than an hour.
The largest group (34%) wouldn't be able to go a day, while 28% said they could go about a week. And 16% said they could go indefinitely without their phone.
While a week without a cellphone seems reasonable to prove you're not addicted, seeing 47% of Americans who can't last a day is, well, alarming.
We would also trade just about any favorite treat (or addiction, in some cases) to get a lost phone back, with 45% of respondents saying they would give up alcohol to retrieve a lost phone, while 34% would give up chocolate.
Here is more suggesting that maybe -- just maybe -- we're too tightly wound when it comes to phones:
Phones over deodorant: Most say their mobile phone is just as important to their daily life as deodorant (91%) and their car (91%) and much more important than TV (76%) and coffee (60%).
Frequent checking: More than a third (35%) check their phone constantly; 85% check more than once a day.
Bank of America says mobile phone usage is so pervasive that it's blowing by other consumer technology staples.
"Mobile phones have changed the way we live our daily lives, and that extends to our finances," says Marc Warshawsky, senior vice president for mobile solutions at Bank of America. "We now have more than 15 million active mobile banking users who access their accounts on a mobile device over 165 million times per month. We've seen this number continue to grow and recently the number of monthly mobile banking logins surpassed online banking logins for the first time."