Cell phones and landlines are very dependant on the grid which is increasingly fragile and overloaded. In a natural disaster the would likley fail or become unreliable. Also in a un natural scenario they could be the primary target. Or the phones could be very easily turned into one way...
I'll put it this way, if you lived downtown and could walk anywhere you needed to go but wanted to have a vehicle for shtf would you buy a Hummer and put it in the garage without driving it? Get a good AR and put it in the closet with some ammo in case the Zombies come, who needs a good zero...
Go with ruggedized Ham equipment if you want to talk RELIABLY more than a mile or two.
I have two radios for trade, search my posts if interested.
Go to the Ham Radio Forum on arfcom for the best info on shtf commo broken down for knuckledragging gun toting types.
I'm a tech for the last couple years. Got into for SHTF commo with some likeminded buddies.
We were all in pretty hard at first but work, economy and family intrude...
I'm a member on the Sawnee Mountain repeater and try to have a radio on there and another on Cartersville or .520 in the...
Even if you bug-in being able to reach out will be an advantage. Being able to listen to news from outside the local area (world band reciever) is a must.
FRS and GMRS are a start but the number of radios on the street means the bands will be ate up, at least untill the soccer moms run out of...