Global leap to 4G and 5G would cut off phone access for millions of vulnerable people.
- Telecom companies aim to profit from the 2G-to-5G transition as governments worldwide face pressure to free up mobile spectrum.
- Vietnam is the latest country to shut down 2G by offering free 4G phones to the poor.
- India and South Africa have expressed concern that the strategy would cut off phone access for millions of vulnerable people.
I’m not sure there would be an advantage. The signals are very different. That might be approximately equal to building a new one.
…you don’t see the advantage in avoiding open heart surgery to replace an embedded medical device?
I think the thing you’d have to replace is outside the body. Something like this:
https://www.mobihealthnews.com/content/biotronik-launches-portable-cellular-transmitter-implantable-heart-devices
I’m not sure an implanted cellular transmitter would even work, given how human tissue absorbs that spectrum.
https://www.researchgate.net/figure/Penetration-depth-of-radiofrequency-into-human-tissues-28_tbl2_323083486
Ooohhh! You know what, I learned something new today! Thank you so much for taking the time to explain it in a way that made sense to me.