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Detect mobile browsers

Written byPhuoc Nguyen
Level 1 — Basic
25 Apr, 2020
Here is a few ways to check if user is browsering from a mobile browser.

1. Check `userAgent` (not recomended)

// You can add more if you want
const isMobile = /Android|BlackBerry|iPad|iPod|iPhone|webOS/i.test(navigator.userAgent);
I don't recommend this approach because the server can send a fake user agent.

2. Use feature detection

Check if the browser supports the `pointer:coarse` media query:
const isMobile = function () {
const match = window.matchMedia('(pointer:coarse)');
return match && match.matches;
We can't rely on the screen size because the mobile devices are getting bigger.

See also

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