"Thats why I pay for a land line
It is only for emergencies.
Except, in FIOS markets, your landline would be via th FIOS service -- which is down.
When my parents had "a certain company" for landline -- I name names, it's CenturyLink, formerly Qwest -- and Verizon Wireless cell phone, CL had several outages while VZW had none. In addition, CL would get fast busies like clockwork around 4 or 5 in the afternoon (which they did, after some years, eventually clear up...), while with VZW I think I got one "all circuits are busy" over like 10 years. I assume as a former part of the Bell system, CenturyLink has the usual huge bank of 48-volt batteries for battery backup, but VZW also has battery and generator backup on their cell sites around here. The cell phones here are more reliable than the landlines. Plus, of course, for an emergency where seconds matter, my cell phone is on me, while the landline, I'd have to find where it's sitting.