I'm Cinda Seamon, Public Education Officer for the Town of Hilton Head Island Fire and Rescue.
Need to call 911? Then it's best to use a landline whenever you do.
You may not know it but when you call 911 from a cell phone, you might not be getting a local 9-1-1 dispatcher. You could be connected to any dispatch center in the surrounding area. So if you must use a cell phone, state exactly where your emergency is ~ the city or town, the street location or business name.
The most important thing is to remain calm and let the dispatcher walk you through the call until help arrives.