A qibla compass that swings around, points somewhere obviously wrong, or disagrees with a second app is a common and frustrating experience — particularly when you are somewhere unfamiliar and want to pray.
It helps to know that the calculation almost certainly is not the problem. The qibla from a fixed point is a single trigonometric expression with no time, date or magnetic component in it; it produces the same answer every time. What is wobbling is the measurement of which way your phone is pointing, and that is a different system entirely.
Cause 1: something magnetic is nearby
This is by far the most common cause, and the most under-appreciated. A phone finds direction with a magnetometer — a sensor measuring the Earth's magnetic field, which is weak. Anything ferrous or magnetised nearby overwhelms it.
The usual culprits are close enough to be invisible: magnetic phone cases and pop-sockets, magnetic car mounts, wireless chargers, laptop lids, speakers, desk frames, radiators, reinforced concrete, and the metal in a car, plane or train. A car is the worst case — you are sitting inside a steel box, and no compass app can be trusted there.
The fix is to step away. Take the phone out of a magnetic case, hold it flat on your open palm, move a metre from furniture and appliances, and see whether the needle settles.
Cause 2: the magnetometer needs calibrating
Magnetometers drift and need periodic recalibration. Both platforms do this by watching the phone move through different orientations, which is why the classic remedy is the figure-of-eight: hold the phone and trace a large figure eight in the air a few times, rotating your wrist so the phone passes through several angles.
It looks superstitious and it genuinely works. If a compass has been erratic since you got in from somewhere, this is usually what it wants. On iOS you can also check that Compass Calibration is enabled under Location Services' system services.
Cause 3: magnetic north is not true north
This one produces a needle that is steady but wrong, which is more dangerous than one that visibly wobbles, because nothing looks broken.
A magnetometer measures the direction of the magnetic field, and the magnetic pole is not the geographic one. The difference — magnetic declination — depends on where you are and changes slowly over years. It is small in much of Europe but exceeds fifteen degrees in parts of North America and the far south. A qibla bearing is calculated from true north, so an app that shows the raw magnetic heading without correcting for declination will be off by exactly that amount, consistently, everywhere in that region.
You cannot fix this by moving. What you can do is compare the number rather than the needle: our qibla finder gives a bearing in degrees from true north, and if a second app shows a steady bearing that differs by ten or fifteen degrees in a region with large declination, the likely explanation is that one of them is not applying the correction.
Cause 4: the app is using a flat-map bearing
Rarer, but it produces the largest errors of all, and it does not wobble either — it is simply wrong by a lot.
The qibla is the initial bearing of the shortest path over a curved Earth. Drawing a straight line to Mecca on a flat Mercator map gives a different angle entirely, and the discrepancy grows with distance and latitude. We measured it: that flat-map answer is out by 42.8° in New York and 48.0° in Toronto — the difference between facing north-east and facing east-south-east. The full comparison is in how the qibla is calculated.
The tell is a bearing that is dramatically wrong rather than slightly wrong, especially in North America, and that stays wrong no matter how carefully you calibrate.
What to do, in order
Work through it like this, and stop when the needle settles.
- Get away from metal. Out of the case, off the desk, out of the car, flat on your palm.
- Calibrate. Figure-of-eight in the air, a few times, rotating your wrist.
- Compare numbers, not needles. Read the bearing in degrees against a second source. If they agree, your needle is the problem; if they differ by a steady ten to fifteen degrees, suspect declination.
- Fall back on a known direction. If the compass cannot be trusted at all — indoors, on a plane, in a car — the bearing itself is still valid. Get the number and align it with something you already know, such as the direction of sunrise or an established qibla marker in the building.
When there is no usable compass at all
Sometimes the honest answer is that no phone compass will work where you are standing. Inside a moving vehicle, in a steel-framed building, or next to industrial equipment, the local field bears no relationship to the Earth's.
The bearing is still correct in those places — it is a property of your coordinates, not your surroundings. Use it as a number. If you know which way the sun rose, you know roughly where east is, and a bearing in degrees is enough to work from there. And if the room has an established qibla marking, that was almost certainly set by someone with better instruments than a phone, and it is a more reliable reference than a needle fighting the building's own steel.
Common questions
- Why does my qibla compass keep spinning?
- Almost always magnetic interference or an uncalibrated magnetometer, not a calculation error. Move away from metal and magnets, take the phone out of a magnetic case, hold it flat, and trace a figure of eight in the air to recalibrate.
- Why do two qibla apps point in different directions?
- If the difference is a steady ten to fifteen degrees, one is probably showing a magnetic heading without correcting for declination. If it is forty degrees or more and you are in North America, one is likely using a flat-map bearing rather than the great-circle one.
- Can I find the qibla without a working compass?
- Yes. The bearing in degrees from true north is valid regardless of whether a compass works where you are standing, so you can align it against a direction you already know — sunrise, or an established qibla marker in the building.
- Does the qibla direction change over time?
- No. It is calculated from your coordinates and the Kaaba's, with no time or date in the formula. If an app's qibla appears to drift from day to day, that is the compass sensor, not the qibla.