A handheld wireless device is adapted to function as a lightweight, small, and low-cost wireless server for serving handheld wireless clients. The rear wheels of the stroller are interconnected with the front legs and attached to the rear legs by a pivoting wheel link so that the rear wheels do not separate from the front wheels when folded, but instead pivot out of alignment with the rear legs. The connecting element includes a first connecting portion, a propping portion and a second connecting portion. The pins may be provided flush with the joining face.