Some consumers wonder whether a land line is necessary when they rely on their cell phone for most of their phone services. Before you decide, keep in mind that land lines are generally considered the most reliable phone service. For example, if your area suffers an electricity outage, a corded phone attached to a land line will still work even after your cell phone or other devices have lost battery power.
Also, if you place an emergency 911 call on a land line, the local dispatch center will receive your precise address. But in the case of 911 calls made on cell phones, the dispatch center receives an approximate location based on coordinates transmitted by the service carrier. In an emergency, precious minutes could be lost while the response team tries to decipher a caller's location based on the cell phone data.