If you're ever lost/stranded change your voicemail immediately to say where you are, who you were with, what time you arrived etc. When people notice you're missing and start calling you, the voicemail may just save your life especially if your phone goes dead or you have no service.
quote (@itsmubashi)
Safety tips:
— https://nitter.net/itsmubashi/status/2085435157516030075#m