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How to use the compass on your phone
The trail splits, the signpost is gone and the map says the hut is somewhere to the north-east. Your phone already has a compass inside it. Used properly, it points the way. Used carelessly next to a magnetic case, it points wherever the case wants.
Calibration, bearings and backup, then compass apps. A phone compass depends on a battery and a sensor that metal and magnets can confuse. In the mountains, carry a paper map and a baseplate compass too, and know how to read them.
Compass and navigation apps rising by visits and sponsorship on Censuus
A younger app for going beyond coverage:
Offline GPS Tracker & CompassApp Storeoffline navigation, route recording and elevation tracking with a compass, no account needed.- Your app hereFree, foreverList my app
Calibrate first
When the compass asks, move the phone in a slow figure of eight until the reading settles. Take off magnetic cases and step away from cars, fences and power lines before you trust the needle.
True north or magnetic north
Maps are drawn to true north, while a needle points to magnetic north, and the gap between them depends on where you are. Many compass apps let you switch. Match the setting to the map you are reading.
Follow a bearing
Point the phone at a landmark in the direction you need, note the degrees, then walk from landmark to landmark on that bearing. Pair it with offline maps; see how to navigate offline on a hike.
Choose an app
Some apps add GPS coordinates, altitude or a route recorder to the compass. Compare them in compass apps and hiking apps.
| Step | What you do | Why |
|---|---|---|
| 1. Calibrate | follow the on-screen prompt | an honest reading |
| 2. Hold it flat | away from magnets and metal | no false north |
| 3. Pick a north | true or magnetic, match your map | no drift over distance |
| 4. Take a bearing | point at a landmark, note degrees | a line to follow |
| 5. Backup | paper map, real compass | when the battery dies |
Frequently asked questions
Does a phone compass work without signal?
Yes. The compass uses a sensor in the phone, not the network. Maps may still need to be downloaded in advance.
Why does my phone compass point the wrong way?
It may need calibrating, or something magnetic nearby is pulling it: a case, a car or a metal fence.
Should I rely on my phone in the mountains?
Use it as one tool. Carry a paper map, a real compass and a charged power bank.