Said pilot forgot to switch his phone off, no biggie happens all the time. Subsequently the ill fated flight took-off.
However the grim face of fatigue then came alive and overwhelmed both pilots putting them both to sleep, mind you this being induced by operational requirements.
Then, many moments later, the said phone came to life from incoming texts of worried relatives and angry ex-wives having not heard from said pilots for days, and the said phone was the ultimate savior of the day, as the pilot was woken up in time, he had no choice but to conduct a go-around(whose actions keeps the press employed)and at the same time have the company's rostering practices exonerated yet again! Give thy blokes another pint!