The map that works with no signal
Your phone knows where it is even when nothing will load.
Satellites don’t check whether you paid for data.
Nothing saved to this device yet.
While you still have a connection, save the guide’s places. After that the map works on a road with no signal, which is the only time it matters.
What this is, and what it is not
- It is a real coastline, the real coordinates of every place the guide publishes, and your real GPS position — with distances and compass directions between them. All of it on the device, all of it working with the aeroplane mode switch on.
- It is not a street map. There are no roads, no house numbers and no turn-by-turn directions, and the distances are straight lines rather than driving routes. For navigating traffic, use a proper map app — and download its offline area before you need it.
- Why not both? A street-level offline map of Vietnam is hundreds of megabytes of tiles. Nobody downloads that at the airport, so we built the part that fits in a pocket and answers the question people actually have: which way, and how far.
If it is an emergency
This map does not list hospitals or clinics, because an address we cannot verify is worse than none in that situation. These numbers are free from any phone, with or without a connection.
What to say when they answer →Questions
- Does GPS work without an internet connection?
- Yes. GPS is a one-way radio signal from satellites and needs no data plan, no SIM card and no mobile signal. What normally stops an offline phone showing a map is that the map images have to be downloaded — not the positioning. Save the places to your device first, and the position and the map both keep working.
- Is there an offline map of Vietnam I can use with no signal?
- EddyTrip's map saves a real coastline and the coordinates of every place in its Phu Quoc guide to your device, then works with the connection off entirely. It shows where you are, where those places are, how far away each one is and in which direction. It is not a street map — there are no roads or turn-by-turn directions — because a street-level offline map of Vietnam is hundreds of megabytes.
- How much space does it take?
- About thirty kilobytes of coastline plus a few tens of kilobytes of places — small enough that it downloads before you have finished reading this sentence, and small enough to keep on a phone indefinitely.
- What does it not do?
- It gives no driving directions, lists no roads and shows no house numbers, and its distances are straight lines rather than routes. For navigating traffic, use a dedicated map app and download its offline area before you travel. This map answers a narrower question: which way, and how far.
- Can I use it outside Phu Quoc?
- The coastline covers Vietnam and its neighbours, so your position is shown correctly anywhere. The places on it come from the EddyTrip Guide, which publishes Phu Quoc only, so elsewhere in Vietnam you will see the coast and yourself on it but no pins.