Even though Rezence is poised to become a wireless charging competitor to Qi, it isnt the only rival in town. WiTriCity has been in the cordless electricity biz since at least 2007 — having partnered up with Toyota for charging its cars for example — but hasnt really made a real consumer play for handheld devices just yet. That changes today, however, with the companys first reference design that pairs an iPhone 5/5s sleeve with a wireless charging pad.