Try this
- Choose an identifiable meeting point, time and waiting rule before contact is lost.
- Make sure the plan does not depend on a code, ticket or map available only on the unavailable phone. Keep an independent return option where practical.
A worked example
“If my battery dies, I’ll meet you at the main entrance at six.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Choose a plan that remains usable without live messages.