Paunitka

"In what world does a grown man guilt someone else over taking care of their child??" - wow, so not only I have noticed that? This aspect of the plot was so absurd...

Indeed, from the technical perspective, there are numerous plot-holes, e.g. when he noticed that the phone was missing, he would probably remotely block it and wipe its content - I mean, I know, it's possible, so a prodigy would know too. Still, if you are not really interested in mobile technology or IT, you probably wouldn't care (I didn't, ignorance is bliss). As for his stupid behaviour - he clearly has a social phobia, so it's stress that does not let him think and act rationally. He is a totally different person over the phone and confronted face-to-face . Also with that girl's phone the mistake resulted from stress - to me that was clear.