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Guides for outages and no-signal days
Short, practical guides. Every safety fact links to its official source.
Can AI work without internet? How offline AI works
:Yes. An AI model can be stored on a phone or computer and run there with no connection. A model small enough for a phone is slower and less capable than a cloud AI, and this guide says where that matters.
Updated November 9, 2026
Do Faraday bags work?
:Yes, if the bag is well made and fully sealed. A worn or half-closed bag can let signals through, so test yours at home. This guide shows how, and gives the honest answer about EMP.
Updated November 9, 2026
Does GPS work without cell service?
:Yes. A phone works out its position from satellite signals, so it needs no cell tower, SIM card or internet. Maps are a separate matter: they must be on the phone before you lose service.
Updated November 9, 2026
What to do in a 72-hour power outage, hour by hour
:This guide lays out three days without power, hour by hour: the safety checks to make at the start, then food and water, heat and cold, generators, phones and information. Each step comes from official guidance.
Updated November 9, 2026
How to communicate when cell towers are down
:This guide goes through what can still get through when cell towers are down (a text, Wi-Fi calling, a 911 call, satellite SOS, a radio), how to set up a family plan, and what to do when nothing gets through.
Updated November 9, 2026
How to store a phone long term
:Store it at about half charge, powered off, somewhere cool and dry, and recharge it every few months. This routine follows the battery guidance phone makers publish for stored phones.
Updated November 9, 2026
Prepper phone: how to set up a phone for emergencies
:A prepper phone is a spare phone loaded ahead of time with offline maps, a reference library, key documents and an AI that runs with no connection. This guide shows how to set one up yourself, and when buying one already set up makes sense.
Updated November 9, 2026