911 emergency calling on a smartphone with american flag in the backdrop. dialing nine eleven on phone concept with red screen

911 emergency red symbol alarm hotline smartphone aid call technology button isolated icon fire contact finger signal hospital communication cellphone phone help hand number support service police telephone sos safety sign mobile rescue accident object background conceptual label canter ambulance health equipment warning design security dialing concept calling american flag backdrop screen nine eleven dial alert visuals national services usa theme flag-themed notification urgent art interface aesthetic aesthetics