On 03/03/2021 11:21, Harry Bloomfield wrote:
Tim+ wrote :
Depending on your network, some providers will give/sell you a device to
route calls through your own broadband via a picocell.

Don't some phones have that facility built in to them? My Iphone seems
to offer that option.

Different technology.

The pico cells become teeny base wireless masts that cover a very small
area with 2/3/4/5G cell signals, so any phone ill work, but WiFi Calling
actually uses the internet to route calls directly not using cellular
technology at all..and requires a phone equipped with the correct
firmware and a mobile operators that supports it..


As wifi coverage gets more and more ubiquitous I suspect that it will in
a few years become the default way to make a mobile phone call...
....while mobile phone calls decline in favour of whatsapp etc...






--
There is nothing a fleet of dispatchable nuclear power plants cannot do
that cannot be done worse and more expensively and with higher carbon
emissions and more adverse environmental impact by adding intermittent
renewable energy.