Citizen-led emergency response groups could be formed
Satellites could be pinged for help in areas with no wifi / internet
EMS workers could be paid more and ambulances / EMS could be an affordable, guaranteed service for citizens
A phone charger could be an emergency tool
Smartphones could be configured for emergencies
Wearable safety tech could be worn in case of emergency
The 911 system could be fixed, updated, and enable texting / video
A ring could be worn for safety