Tens of thousands of AT&T customers were left without service for hours on Thursday for their home phone, internet and mobile phone services, according to Downdetector. The outages started popping up just before 3:30 a.m. ET, according to a graph shown on the website that tracks outages. Just before 2 p.m. ET, the number of reports had declined drastically to nearly 4,900 after spiking at more than 73,000 just after 9 a.m. ET. Most users still impacted, 51%, say they are having issues with mobile phone service. Forty percent of customers currently reporting being affected say they have no signal...