# Firefox and havok on android **URL:** \ **Category:** Bugs\ **Created:** [November 19, 2023, 9:21pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798 "2023-11-19T21:21:46Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![peterainbow](https://avatars.discourse-cdn.com/v4/letter/p/85e7bf/32.png) [@peterainbow](https://forum.babylonjs.com/u/peterainbow)\ **Post date:** [November 19, 2023, 9:21pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/1 "2023-11-19T21:21:46Z")
hi, i’m unable to run my own havok/babylonjs app on firefox on android and a few of the examples also don’t work, comes up with a wasm compiler error. obviously i’m probably fairly unusual using firefox on android cheers pete ps thanks for the great work your doing with this project, i’m having a lot of fun ---
**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\ **Post date:** [November 20, 2023, 10:58pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/2 "2023-11-20T22:58:57Z")
cc @eoin and @Cedric as it might be due to some unsupported features on this platform ? ---
**Author:** ![Cedric](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/cedric/32/2742_2.png) [@Cedric](https://forum.babylonjs.com/u/Cedric)\ **Post date:** [November 21, 2023, 8:42am UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/3 "2023-11-21T08:42:48Z")
It looks like the error on old Safari. It was unsupported SIMD instruction. Updating Safari/iOS fixed the issue. I guess your browser is a bit old @peterainbow ? ---
**Author:** ![peterainbow](https://avatars.discourse-cdn.com/v4/letter/p/85e7bf/32.png) [@peterainbow](https://forum.babylonjs.com/u/peterainbow)\ **Post date:** [November 21, 2023, 12:29pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/4 "2023-11-21T12:29:29Z")
don’t know what version of firefox is, it’s whatever the latest is for my phone from the play store according to it’s about 119.1.1 ( 2023-11-09 ) so probably not that old if anyone fancies installing firefox on android and trying out one of the many playgrounds that use havok ---
**Author:** ![peterainbow](https://avatars.discourse-cdn.com/v4/letter/p/85e7bf/32.png) [@peterainbow](https://forum.babylonjs.com/u/peterainbow)\ **Post date:** [November 21, 2023, 12:33pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/5 "2023-11-21T12:33:03Z")
eg [https://playground.babylonjs.com/#Z8HTUN#486](https://playground.babylonjs.com/#Z8HTUN#486) an amusing beer pong test fails with error at (9,6495) wasm validation error: at offset 345: bad type ---
**Author:** ![Cedric](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/cedric/32/2742_2.png) [@Cedric](https://forum.babylonjs.com/u/Cedric)\ **Post date:** [November 21, 2023, 1:11pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/6 "2023-11-21T13:11:21Z")
I’ve just tested [https://theplayroom.babylonjs.com/](https://theplayroom.babylonjs.com/) on FF 119.1.1 and everything is fine ---
**Author:** ![peterainbow](https://avatars.discourse-cdn.com/v4/letter/p/85e7bf/32.png) [@peterainbow](https://forum.babylonjs.com/u/peterainbow)\ **Post date:** [November 21, 2023, 1:31pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/7 "2023-11-21T13:31:38Z")
on android, if so which android version and i guess phone note it works fine on firefox on my PC ---
**Author:** ![peterainbow](https://avatars.discourse-cdn.com/v4/letter/p/85e7bf/32.png) [@peterainbow](https://forum.babylonjs.com/u/peterainbow)\ **Post date:** [November 21, 2023, 1:35pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/8 "2023-11-21T13:35:14Z")
just tried theplayroom lol fine on PC/firefox on phone bunny and arc shows, but nothing else appears and it doesn’t respond to kicks i’m guessing the bunny and arc and button are setup in GUI or elsewhere and that the physics is failing ( no error though ) ---
**Author:** ![peterainbow](https://avatars.discourse-cdn.com/v4/letter/p/85e7bf/32.png) [@peterainbow](https://forum.babylonjs.com/u/peterainbow)\ **Post date:** [November 21, 2023, 1:44pm UTC](https://forum.babylonjs.com/t/firefox-and-havok-on-android/45798/9 "2023-11-21T13:44:39Z")
btw it’s a moto g6play on android 9 that it doesn’t work on however just tried it on a mui phone with android 12 and it works fine so looking like it’s about android ☹ grrrr, so guess an extra corner of a corner, feel free to ignore, not that anyone is actually going to play with stuff, just bored and unemployed…