You might do better asking that in the correct forum:
[Link: remotecentral.com]

but even in the right forum, the info you gave wouldn't be enough to determine whether your remote is defective, or you're doning the process wrong, or the two speakers you tried (one phone and one PC) don't generate enough magnetic field.

Regarding this forum: Several brands, including OneForAll, use "URC" in the model names of universal remote controls, but this forum is just for the URC brand, not "URC" models of other brands.