http://www.siemensjobcam.com/mobile-5-0-cingular/
what is the cheapest cell phone with Windows Mobile 5.0 for cingular?
preferably a slider
Up cingular is very likely HP IPAQ 8125 or 6515. There is also a difference between windows mobile 5.0 Pocket PC Edition or Smartphone edition. Smartphone has some issues Exploit removed and the cheaper edition would be the phone smartphone followed Cingular 2125 Cingular 3125 (which are spoon) or Blackjack with a new course plan.
htc TYTN / Cingular 8525