Communication Myths in Emergencies — What Actually Works?
Misconceptions about staying informed during a crisis: mobile networks, internet and emergency calls — what really functions when networks go down.
Does the mobile phone network work during a power outage?
Only briefly. Mobile towers typically have backup generators or UPS systems (uninterruptible power supplies) that automatically engage when grid power fails. These buffers last depending on the equipment of the tower between 2 and 8 hours. After that the towers go offline — taking with them voice calls, SMS and mobile internet. During a widespread power outage backup capacities are also heavily strained because all users try to communicate simultaneously — which can overload networks before batteries are even depleted. What works longer during an emergency: landline phones with a traditional analog connection (VoIP connections also fail when the DSL router has no power). Satellite phones are independent of the power grid. Shortwave and AM radio can receive news without any internet connection. Conclusion: do not rely on your smartphone being reachable for 24 hours in an emergency — it will fail sooner than expected.
Can I access emergency information from government websites during a crisis?
Not if the internet has failed. This is the blind spot of the digital information society: in a true blackout the internet is unavailable — exactly when official information is most urgently needed. Government websites, warning apps like FEMA Alerts, Emergency Alert System or equivalent national apps all require a working internet connection. If power and cellular networks are down these sources are unreachable. The solution: FM radio remains the most reliable crisis medium. Public broadcasters are required to transmit civil protection information and have their own backup power. Keep a hand-crank radio or battery-powered radio in your household — it is the only information source that works even during a combined power and internet outage. Download official emergency warning apps and enable push notifications — but do not rely exclusively on them.
Is the emergency number (911 / 112 / 999) always reachable, even with a dead battery?
Partially, but not guaranteed. Emergency numbers receive the highest priority in network capacity allocation. In many countries, mobile phones can place emergency calls over any available network even without a SIM card. But: if all cell towers are down the emergency number via mobile is also unreachable. A traditional analog landline (where available) remains functional longer — check whether your connection is truly analog or has already been switched to VoIP. During a major disaster emergency lines may also be overloaded — dial emergency numbers only in genuine life-threatening situations, not for general information requests. Important: write down the direct phone numbers of your local municipal office, neighbors, doctors and relatives on paper. In an emergency when contact lists in your smartphone are inaccessible, handwritten notes can be life-saving.
Is downloading an emergency alert app sufficient as a communication strategy?
No. Emergency alert apps (such as FEMA Alerts, NINA, or equivalent national warning systems) are important tools — but not a substitute for a comprehensive communication plan. These apps require a working smartphone, battery and internet connection. If any one of these is unavailable the app delivers no warnings. Push notifications also only work when the device is on and connected to the network — in an abrupt blackout a warning may never arrive. A well-prepared household combines multiple communication tools: a warning app for everyday use, a hand-crank FM radio for emergencies, written contact lists for fail-safe access to important numbers, and a pre-agreed outdoor meeting point as a family communication plan for members who become separated. Many communities also have siren warning systems — check in advance whether and where sirens exist in your area and what each signal pattern means.
Can I communicate reliably with a standard walkie-talkie in an emergency?
With limitations, yes. PMR446 walkie-talkies (standard off-the-shelf consumer models) work in open terrain at distances of 0.5–3 km, in urban environments with buildings often only 200–500 meters. They require no network infrastructure and only batteries — making them very crisis-resilient. Prerequisites for useful operation: both parties must use the same device or at least the same channel. Batteries must be charged (or spare batteries available). PMR446 is well-suited for short distances — communicating with a neighbor, within a building complex or across a property. For greater distances there is amateur radio (license required but very robust) and satellite phones (expensive but entirely network-independent). For most households a pair of PMR446 devices is a good and affordable addition to the emergency kit — they cost $20–50 and provide real value when the mobile network has failed.
