Can unlocked iPhone 4S use Verizon/Sprint?

So, I own an unlocked iPhone 4S and I've searched for possibility of using carriers like Verizon, Sprint, or Virgin Mobile. The answers I found are "No because unlocked iPhone can't use CDMA carriers." However I found this chart that summarizes carriers and the technology they uses and found that while Virgin Mobile uses only CDMA (so I can't use this), turns out Verizon Wireless and Sprint has both CDMA and UMTS technologies. With a little research I learned that UMTS is based off the GSM technology. So does that mean unlocked iPhone 4S (GSM) can work on Verizon and Sprint?

Nope, gsm iphones can only work on att, tmobile, simple mobile, straight talk.

Agree with new york, it is not possible.