In astrological terms, Mercury is king. According to AstrologyZone.com: "Mercury rules all types of communication, including listening, speaking, learning, reading, editing, researching, negotiating, selling, and buying. Mercury also rules all formal contracts and agreements, as well as important documents such as book manuscripts or term papers, agreements, deeds, contracts, leases, wills, and so forth."
So, if you do believe in astrology, it means that when the planet is in retrograde, it is resting, and when Mercury rests and can't oversee the smooth ongoing of all that it is responsible for, carnage will occur... apparently. In fact, one is going on right now and will last from 17 September to 9 October.
However, as previously touched upon, this happens four times a year, and at one of these points your phone may have run out of battery or another coincidental mild inconvenience, but the pandemonium that is predicted is nothing short of make believe. Sorry to break it to you.