I am the developer of FindMeSAR (https://findmesar.com https://findmesar.com) which is mentioned here in the comments. The first time you open this web page yo

I am the developer of FindMeSAR (https://findmesar.com https://findmesar.com) which is mentioned here in the comments. The first time you open this web page your device must be online. The code is saved in a special part of your browser's memory. This web page (aka web app) will then work offline. This is done with service worker coding plus appcache coding as a fall back. If you are a bit skeptical that a web page can work offline, just go ahead and try it. There is an icon you can save on your screen and a 'Tips' button with more information. Finally, it turns out that if you ever need to call for help with your cell phone there are some things you should know in order to have the best chance of reaching 911 or anyone else. After reading through a whole pile of documents on the FCC website I put my findings into 4 PDF reports. The end of each report has links to the other reports. Open PDF: https://findmesar.com/p/pdf/smart_way_call_911_with_cell_phone.pdf https://findmesar.com/p/pdf/smart_way_call_911_with_cell_pho...