4 ms·
Fascinating problem. Since I have Faraday cages on the mind today (not that I know much more than ~10 minutes of reading)... simply isolating the phone from al
by waterhouse 7y ago
Fascinating problem. Since I have Faraday cages on the mind today (not that I know much more than ~10 minutes of reading)... simply isolating the phone from all signals would block both the message and any software update, so that doesn't work. But what if you attached it to wifi but not to the cell network? Either have the wifi router (itself having a wired connection) and the phone in the same shield; or, I guess, people say Faraday cages target certain wavelengths, so if wifi and cell tower are sufficiently different, maybe you could have a selectively blocking Faraday cage. Would that have been workable? (non-EE here)
- gbrown 7y agoTo answer your question about selectively blocking, just put the wifi router inside the cage. To the point though, feature phones didn't have WiFi generally. I'm also not sure how doing so would fix the issue, unless you could block the number perhaps.
- sorenjan 7y agoFeature phones also didn't have OTA updates. I remember taking my phones to service centers to get the latest software flashed. Later on you could flash it yourself with a cable to your PC, browsing esato.com for new versions.