A client of mine is accessing this site from his phone, with OS Android. So, that sends the following browser signature:
Mozilla/5.0 (Linux; Android 5.0.2; MotoE2(4G-LTE) Build/LXI22.50-53.8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.95 Mobile Safari/537.36
The site works OK. However, he cannot see the javascript message. An option is probably turned off in his phone for that. Anyone would know what it is?