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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](https://www.offgridone.com/guides/can-ai-work-without-internet)
  [:](https://www.offgridone.com/guides/can-ai-work-without-internet)

  [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.](https://www.offgridone.com/guides/can-ai-work-without-internet)

  [Updated November 9, 2026](https://www.offgridone.com/guides/can-ai-work-without-internet)
- ## [Do Faraday bags work?](https://www.offgridone.com/guides/do-faraday-bags-work)
  [:](https://www.offgridone.com/guides/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.](https://www.offgridone.com/guides/do-faraday-bags-work)

  [Updated November 9, 2026](https://www.offgridone.com/guides/do-faraday-bags-work)
- ## [Does GPS work without cell service?](https://www.offgridone.com/guides/does-gps-work-without-cell-service)
  [:](https://www.offgridone.com/guides/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.](https://www.offgridone.com/guides/does-gps-work-without-cell-service)

  [Updated November 9, 2026](https://www.offgridone.com/guides/does-gps-work-without-cell-service)
- ## [What to do in a 72-hour power outage, hour by hour](https://www.offgridone.com/guides/first-72-hours-power-outage)
  [:](https://www.offgridone.com/guides/first-72-hours-power-outage)

  [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.](https://www.offgridone.com/guides/first-72-hours-power-outage)

  [Updated November 9, 2026](https://www.offgridone.com/guides/first-72-hours-power-outage)
- ## [How to communicate when cell towers are down](https://www.offgridone.com/guides/how-to-communicate-when-cell-towers-are-down)
  [:](https://www.offgridone.com/guides/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.](https://www.offgridone.com/guides/how-to-communicate-when-cell-towers-are-down)

  [Updated November 9, 2026](https://www.offgridone.com/guides/how-to-communicate-when-cell-towers-are-down)
- ## [How to store a phone long term](https://www.offgridone.com/guides/how-to-store-a-phone-long-term)
  [:](https://www.offgridone.com/guides/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.](https://www.offgridone.com/guides/how-to-store-a-phone-long-term)

  [Updated November 9, 2026](https://www.offgridone.com/guides/how-to-store-a-phone-long-term)
- ## [Prepper phone: how to set up a phone for emergencies](https://www.offgridone.com/guides/prepper-phone-setup)
  [:](https://www.offgridone.com/guides/prepper-phone-setup)

  [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.](https://www.offgridone.com/guides/prepper-phone-setup)

  [Updated November 9, 2026](https://www.offgridone.com/guides/prepper-phone-setup)

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