Should one stop reciting the Quran from a phone or a Mus'haf when an erection occurs, fearing to touch it in this state, or is this act a form of waswas (whisperings/groundless misgivings)?

It is clear that the questioner is afflicted with waswas (obsessive whispering), and he must ignore these whispers and pay them no attention. The mere erection of the penis does not nullify wudu' (ablution). The nullifiers of wudu' do not prevent touching a phone or tapes that contain the Quran, nor do they prevent reading the Quran or listening to it. Indeed, Muslims have unanimously agreed on the permissibility of reciting the Quran for one who is in a state of minor ritual impurity.