Core Guide 01
Offline GPS for iPhone
A practical guide to what still works when internet, service, and Wi-Fi disappear - and what your iPhone can still tell you from the sky.
This guide pulls together the exact offline GPS questions people search most: does GPS need internet, does iPhone GPS work without service, does GPS work without Wi-Fi, and what part of location services is actually doing the work.
This guide gives you
Section 1
What people usually get wrong
Most people test GPS by opening a connected map app. When the app cannot load tiles or search, they assume GPS died. This guide corrects that assumption and shows which parts of the stack still work cleanly on-device.
Section 2
What still matters when signal disappears
Once the network layer is gone, the important things are exact coordinates, altitude, speed, accuracy, and any saved history or favorites that already live on the phone. Those are the pieces that keep a location utility useful off-grid.
Section 3
Where SkyLocation fits
SkyLocation focuses on the offline-GPS-on-iPhone problem specifically - exact coordinates, altitude, and accuracy read straight from the device - rather than trying to be a full offline map platform. That is what keeps it small, fast, and dependable when the network is gone.
Related guides in this series
These pages answer the more specific questions under this guide and take you deeper into how the feature works in practice.
Useful comparisons from this guide
FAQ
Follow-up questions this guide should settle
These questions usually appear after people understand the category but still need a sharper decision rule.